Transaction Hash:
Block:
17690569 at Jul-14-2023 08:39:23 AM +UTC
Transaction Fee:
0.00629735138867568 ETH
$15.29
Gas Used:
317,222 Gas / 19.85155944 Gwei
Account State Difference:
Address | Before | After | State Difference | ||
---|---|---|---|---|---|
0x1b98e61F...289b6bdcf |
0.04542952869747189 Eth
Nonce: 48
|
0.03913217730879621 Eth
Nonce: 49
| 0.00629735138867568 | ||
0x3Bee5122...22aBB5436
Miner
| (MEV Builder: 0x3B...436) | 41.490713157517221921 Eth | 41.491030379517221921 Eth | 0.000317222 |
Execution Trace
Swapper.call( source=4, tokenIn=0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, tokenOut=0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE, amountIn=933687004919674798736, minAmountOut=102782540371411380, data=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
-
KishuInu.allowance( owner=0x1b98e61F690a2f9c73eF8D99Af49A98289b6bdcf, spender=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 115792089237316195423570985008687907853269984665640564039457584007913129639935 )
SmartVault.collect( token=0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, from=0x1b98e61F690a2f9c73eF8D99Af49A98289b6bdcf, amount=933687004919674798736, data=0x ) => ( collected=915013436868408271246 )
SmartVault.collect( token=0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, from=0x1b98e61F690a2f9c73eF8D99Af49A98289b6bdcf, amount=933687004919674798736, data=0x ) => ( collected=915013436868408271246 )
-
KishuInu.balanceOf( account=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 509729480331630 )
-
KishuInu.transferFrom( sender=0x1b98e61F690a2f9c73eF8D99Af49A98289b6bdcf, recipient=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A, amount=933687004919674798736 ) => ( True )
-
KishuInu.balanceOf( account=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 915013946597888602876 )
-
SmartVault.STATICCALL( )
-
SmartVault.DELEGATECALL( )
-
SmartVault.swap( source=4, tokenIn=0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, tokenOut=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, amountIn=915013436868408271246, limitType=1, limitAmount=102782540371411380, data=0x12AA3CAF00000000000000000000000092F3F71CEF740ED5784874B8C70FF87ECDF33588000000000000000000000000A2B4C0AF19CC16A6CFACCE81F192B024D625817D000000000000000000000000C02AAA39B223FE8D0A0E5C4F27EAD9083C756CC2000000000000000000000000F82D8EC196FB0D56C6B82A8B1870F09502A49F88000000000000000000000000A7CA2C8673BCFA5A26D8CEEC2887F2CC2B0DB22A0000000000000000000000000000000000000000000000329D829816B39D82900000000000000000000000000000000000000000000000000174C3ADF81DA867000000000000000000000000000000000000000000000000000000000000000400000000000000000000000000000000000000000000000000000000000001400000000000000000000000000000000000000000000000000000000000000160000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000BF0000000000000000000000000000000000000000000000000000A100003A4020F82D8EC196FB0D56C6B82A8B1870F09502A49F88BC25CF77000000000000000000000000F82D8EC196FB0D56C6B82A8B1870F09502A49F8800206AE40711B8002DC6C0F82D8EC196FB0D56C6B82A8B1870F09502A49F881111111254EEB25477B68FB85ED929F73A9605820000000000000000000000000000000000000000000000000174C3ADF81DA867A2B4C0AF19CC16A6CFACCE81F192B024D625817D000BD34B36 ) => ( amountOut=4094005361 )
SmartVault.swap( source=4, tokenIn=0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, tokenOut=0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, amountIn=915013436868408271246, limitType=1, limitAmount=102782540371411380, data=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amountOut=4094005361 )
-
KishuInu.balanceOf( account=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 915013946597888602876 )
-
WETH9.balanceOf( 0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 0 )
0xebe080c88f6d65fd055aaf0ede7b431eb284450d.a231a780( )
-
WETH9.balanceOf( 0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A ) => ( 0 )
-
KishuInu.allowance( owner=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A, spender=0x1111111254EEB25477B68fb85Ed929f73A960582 ) => ( 0 )
-
KishuInu.approve( spender=0x1111111254EEB25477B68fb85Ed929f73A960582, amount=915013436868408271246 ) => ( True )
AggregationRouterV5.swap( executor=0x92F3f71CeF740ED5784874B8C70Ff87ECdF33588, desc=[{name:srcToken, type:address, order:1, indexed:false, value:0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D, valueString:0xA2b4C0Af19cC16a6CfAcCe81F192B024d625817D}, {name:dstToken, type:address, order:2, indexed:false, value:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, valueString:0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2}, {name:srcReceiver, type:address, order:3, indexed:false, value:0xF82d8Ec196Fb0D56c6B82a8B1870F09502A49F88, valueString:0xF82d8Ec196Fb0D56c6B82a8B1870F09502A49F88}, {name:dstReceiver, type:address, order:4, indexed:false, value:0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A, valueString:0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A}, {name:amount, type:uint256, order:5, indexed:false, value:933687004919674798736, valueString:933687004919674798736}, {name:minReturnAmount, type:uint256, order:6, indexed:false, value:104923843295815783, valueString:104923843295815783}, {name:flags, type:uint256, order:7, indexed:false, value:4, valueString:4}], permit=0x, data=0x0000000000000000000000000000000000000000000000000000A100003A4020F82D8EC196FB0D56C6B82A8B1870F09502A49F88BC25CF77000000000000000000000000F82D8EC196FB0D56C6B82A8B1870F09502A49F8800206AE40711B8002DC6C0F82D8EC196FB0D56C6B82A8B1870F09502A49F881111111254EEB25477B68FB85ED929F73A9605820000000000000000000000000000000000000000000000000174C3ADF81DA867A2B4C0AF19CC16A6CFACCE81F192B024D625817D ) => ( returnAmount=4094005361, spentAmount=0 )
-
KishuInu.transferFrom( sender=0xa7Ca2C8673bcFA5a26d8ceeC2887f2CC2b0Db22A, recipient=0xF82d8Ec196Fb0D56c6B82a8B1870F09502A49F88, amount=933687004919674798736 )
-
-
-
call[Swapper (ln:4746)]
isSourceAllowed[Swapper (ln:4754)]
contains[Swapper (ln:4712)]
isNativeToken[Swapper (ln:4763)]
sendValue[Swapper (ln:4765)]
payable[Swapper (ln:4765)]
wrap[Swapper (ln:4766)]
allowance[Swapper (ln:4769)]
collect[Swapper (ln:4770)]
_wrappedIfNative[Swapper (ln:4775)]
_wrappedIfNative[Swapper (ln:4776)]
swap[Swapper (ln:4781)]
isNativeToken[Swapper (ln:4792)]
unwrap[Swapper (ln:4792)]
withdraw[Swapper (ln:4793)]
Executed[Swapper (ln:4794)]
File 1 of 6: Swapper
File 2 of 6: KishuInu
File 3 of 6: SmartVault
File 4 of 6: SmartVault
File 5 of 6: WETH9
File 6 of 6: AggregationRouterV5
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IBridgeConnector * @dev Bridge Connector interface to bridge tokens between different chains. It must follow IImplementation interface. */ interface IBridgeConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Hop only for now. */ enum Source { Hop } /** * @dev Bridge assets to a different chain * @param source Source to execute the requested bridge op * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amountIn Amount of tokens to be bridged * @param minAmountOut Minimum amount of tokens willing to receive on the destination chain * @param recipient Address that will receive the tokens on the destination chain * @param data ABI encoded data that will depend on the requested source */ function bridge( uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import './IAuthorizer.sol'; /** * @title Authorizer * @dev Authorization module to be used by contracts that need to implement permissions for their methods. * It provides a permissions model to list who is allowed to call what function in a contract. And only accounts * authorized to manage those permissions are the ones that are allowed to authorize or unauthorize accounts. */ contract Authorizer is IAuthorizer { // Constant used to denote that a permission is open to anyone address public constant ANY_ADDRESS = address(0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF); // Internal mapping to tell who is allowed to do what indexed by (account, function selector) mapping (address => mapping (bytes4 => bool)) private authorized; /** * @dev Modifier that should be used to tag protected functions */ modifier auth() { _authenticate(msg.sender, msg.sig); _; } /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) public view override returns (bool) { return authorized[ANY_ADDRESS][what] || authorized[who][what]; } /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external override auth { _authorize(who, what); } /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external override auth { _unauthorize(who, what); } /** * @dev Internal function to authenticate someone over a function. * It reverts if the given account is not authorized to call the requested function. * @param who Address to be authenticated * @param what Function selector to be authenticated */ function _authenticate(address who, bytes4 what) internal view { require(isAuthorized(who, what), 'AUTH_SENDER_NOT_ALLOWED'); } /** * @dev Internal function to authorize someone to call a function * @param who Address to be authorized * @param what Function selector to be granted */ function _authorize(address who, bytes4 what) internal { authorized[who][what] = true; emit Authorized(who, what); } /** * @dev Internal function to unauthorize someone to call a function * @param who Address to be unauthorized * @param what Function selector to be revoked */ function _unauthorize(address who, bytes4 what) internal { authorized[who][what] = false; emit Unauthorized(who, what); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IAuthorizer */ interface IAuthorizer { /** * @dev Emitted when an account is authorized to call a function */ event Authorized(address indexed who, bytes4 what); /** * @dev Emitted when an account is unauthorized to call a function */ event Unauthorized(address indexed who, bytes4 what); /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external; /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external; /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) external view returns (bool); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title FixedPoint * @dev Math library to operate with fixed point values with 18 decimals */ library FixedPoint { // 1 in fixed point value: 18 decimal places uint256 internal constant ONE = 1e18; /** * @dev Multiplies two fixed point numbers rounding down */ function mulDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product / ONE; } } /** * @dev Multiplies two fixed point numbers rounding up */ function mulUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product == 0 ? 0 : (((product - 1) / ONE) + 1); } } /** * @dev Divides two fixed point numbers rounding down */ function divDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return aInflated / b; } } /** * @dev Divides two fixed point numbers rounding up */ function divUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return ((aInflated - 1) / b) + 1; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title UncheckedMath * @dev Math library to perform unchecked operations */ library UncheckedMath { /** * @dev Unsafely adds two unsigned integers */ function uncheckedAdd(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a + b; } } /** * @dev Unsafely subtracts two unsigned integers */ function uncheckedSub(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a - b; } } /** * @dev Unsafely multiplies two unsigned integers */ function uncheckedMul(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a * b; } } /** * @dev Unsafely multiplies two signed integers */ function uncheckedMul(int256 a, int256 b) internal pure returns (int256) { unchecked { return a * b; } } /** * @dev Unsafely divides two unsigned integers */ function uncheckedDiv(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a / b; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title Denominations * @dev Provides a list of ground denominations for those tokens that cannot be represented by an ERC20. * For now, the only needed is the native token that could be ETH, MATIC, or other depending on the layer being operated. */ library Denominations { address internal constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; // Fiat currencies follow https://en.wikipedia.org/wiki/ISO_4217 address internal constant USD = address(840); function isNativeToken(address token) internal pure returns (bool) { return token == NATIVE_TOKEN; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import './Denominations.sol'; /** * @title ERC20Helpers * @dev Provides a list of ERC20 helper methods */ library ERC20Helpers { function approve(address token, address to, uint256 amount) internal { SafeERC20.safeApprove(IERC20(token), to, 0); SafeERC20.safeApprove(IERC20(token), to, amount); } function transfer(address token, address to, uint256 amount) internal { if (Denominations.isNativeToken(token)) Address.sendValue(payable(to), amount); else SafeERC20.safeTransfer(IERC20(token), to, amount); } function balanceOf(address token, address account) internal view returns (uint256) { if (Denominations.isNativeToken(token)) return address(account).balance; else return IERC20(token).balanceOf(address(account)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /** * @title IWrappedNativeToken */ interface IWrappedNativeToken is IERC20 { /** * @dev Wraps msg.value into the wrapped-native token */ function deposit() external payable; /** * @dev Unwraps requested amount to the native token */ function withdraw(uint256 amount) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ interface IPriceFeedProvider { /** * @dev Emitted every time a price feed is set for (base, quote) pair */ event PriceFeedSet(address indexed base, address indexed quote, address feed); /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view returns (address); /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) external; /** * @dev Sets a list of price feeds * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import './IPriceFeedProvider.sol'; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ contract PriceFeedProvider is IPriceFeedProvider { using UncheckedMath for uint256; // Mapping of price feeds from "token A" to "token B" mapping (address => mapping (address => address)) private _priceFeeds; /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view override returns (address) { return _priceFeeds[base][quote]; } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public virtual override { _priceFeeds[base][quote] = feed; emit PriceFeedSet(base, quote, feed); } /** * @dev Sets a list of price feeds. Sender must be authorized. * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) public virtual override { require(bases.length == quotes.length, 'SET_FEEDS_INVALID_QUOTES_LENGTH'); require(bases.length == feeds.length, 'SET_FEEDS_INVALID_FEEDS_LENGTH'); for (uint256 i = 0; i < bases.length; i = i.uncheckedAdd(1)) setPriceFeed(bases[i], quotes[i], feeds[i]); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IPriceOracle * @dev Oracle that interfaces with external feeds to provide quotes for tokens based on any other token. * It must support also `IImplementation`. */ interface IPriceOracle is IImplementation { /** * @dev Tells the price of a token (base) in a given quote. The response is expressed using the corresponding * number of decimals so that when performing a fixed point product of it by a `base` amount it results in * a value expressed in `quote` decimals. For example, if `base` is ETH and `quote` is USDC, then the returned * value is expected to be expressed using 6 decimals: * * FixedPoint.mul(X[ETH], price[USDC/ETH]) = FixedPoint.mul(X[18], price[6]) = X * price [6] * * @param provider Contract providing the price feeds to use by the oracle * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address provider, address base, address quote) external view returns (uint256); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import './BaseImplementation.sol'; /** * @title BaseAuthorizedImplementation * @dev BaseImplementation using the Authorizer mixin. Base implementations that want to use the Authorizer * permissions mechanism should inherit from this contract instead. */ abstract contract BaseAuthorizedImplementation is BaseImplementation, Authorizer { /** * @dev Creates a new BaseAuthorizedImplementation * @param admin Address to be granted authorize and unauthorize permissions * @param registry Address of the Mimic Registry */ constructor(address admin, address registry) BaseImplementation(registry) { _authorize(admin, Authorizer.authorize.selector); _authorize(admin, Authorizer.unauthorize.selector); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './IImplementation.sol'; import '../registry/IRegistry.sol'; /** * @title BaseImplementation * @dev This implementation contract comes with an immutable reference to an implementations registry where it should * be registered as well (checked during initialization). It allows requesting new instances of other registered * implementations to as another safety check to make sure valid instances are referenced in case it's needed. */ abstract contract BaseImplementation is IImplementation { // Immutable implementations registry reference address public immutable override registry; /** * @dev Creates a new BaseImplementation * @param _registry Address of the Mimic Registry where dependencies will be validated against */ constructor(address _registry) { registry = _registry; } /** * @dev Internal function to validate a new dependency that must be registered as stateless. * It checks the new dependency is registered, not deprecated, and stateless. * @param dependency New stateless dependency to be set */ function _validateStatelessDependency(address dependency) internal view { require(_validateDependency(dependency), 'DEPENDENCY_NOT_STATELESS'); } /** * @dev Internal function to validate a new dependency that cannot be registered as stateless. * It checks the new dependency is registered, not deprecated, and not stateful. * @param dependency New stateful dependency to be set */ function _validateStatefulDependency(address dependency) internal view { require(!_validateDependency(dependency), 'DEPENDENCY_NOT_STATEFUL'); } /** * @dev Internal function to validate a new dependency. It checks the dependency is registered and not deprecated. * @param dependency New dependency to be set * @return Whether the dependency is stateless or not */ function _validateDependency(address dependency) private view returns (bool) { (bool stateless, bool deprecated, bytes32 namespace) = IRegistry(registry).implementationData(dependency); require(namespace != bytes32(0), 'DEPENDENCY_NOT_REGISTERED'); require(!deprecated, 'DEPENDENCY_DEPRECATED'); return stateless; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; // solhint-disable func-name-mixedcase /** * @title IImplementation * @dev Implementation interface that must be followed for implementations to be registered in the Mimic Registry */ interface IImplementation { /** * @dev Tells the namespace under which the implementation is registered in the Mimic Registry */ function NAMESPACE() external view returns (bytes32); /** * @dev Tells the address of the Mimic Registry */ function registry() external view returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import './InitializableImplementation.sol'; /** * @title InitializableAuthorizedImplementation * @dev InitializableImplementation using the Authorizer mixin. Initializable implementations that want to use the * Authorizer permissions mechanism should inherit from this contract instead. */ abstract contract InitializableAuthorizedImplementation is InitializableImplementation, Authorizer { /** * @dev Creates a new InitializableAuthorizedImplementation * @param registry Address of the Mimic Registry */ constructor(address registry) InitializableImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Initialization function that authorizes an admin account to authorize and unauthorize accounts. * Note this function can only be called from a function marked with the `initializer` modifier. * @param admin Address to be granted authorize and unauthorize permissions */ function _initialize(address admin) internal onlyInitializing { _initialize(); _authorize(admin, Authorizer.authorize.selector); _authorize(admin, Authorizer.unauthorize.selector); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './BaseImplementation.sol'; /** * @title InitializableImplementation * @dev Implementation contract to be used through proxies. Inheriting contracts are meant to be initialized through * initialization functions instead of constructor functions. It allows re-using the same logic contract while making * deployments cheaper. */ abstract contract InitializableImplementation is BaseImplementation, Initializable { /** * @dev Creates a new BaseImplementation. Note that initializers are disabled at creation time. */ constructor(address registry) BaseImplementation(registry) { _disableInitializers(); } /** * @dev Initialization function. * Note this function can only be called from a function marked with the `initializer` modifier. */ function _initialize() internal view onlyInitializing { // solhint-disable-previous-line no-empty-blocks } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; /** * @title IRegistry * @dev Registry interface, it must follow the IAuthorizer interface. */ interface IRegistry is IAuthorizer { /** * @dev Emitted every time a new implementation is registered */ event Registered(bytes32 indexed namespace, address indexed implementation, bool stateless); /** * @dev Emitted every time an implementation is deprecated */ event Deprecated(bytes32 indexed namespace, address indexed implementation); /** * @dev Tells the data of an implementation: * @param implementation Address of the implementation to request it's data */ function implementationData(address implementation) external view returns (bool stateless, bool deprecated, bytes32 namespace); /** * @dev Tells if a specific implementation is registered under a certain namespace and it's not deprecated * @param namespace Namespace asking for * @param implementation Address of the implementation to be checked */ function isActive(bytes32 namespace, address implementation) external view returns (bool); /** * @dev Registers a new implementation for a given namespace * @param namespace Namespace to be used for the implementation * @param implementation Address of the implementation to be registered * @param stateless Whether the implementation is stateless or not */ function register(bytes32 namespace, address implementation, bool stateless) external; /** * @dev Deprecates a registered implementation * @param implementation Address of the implementation to be deprecated */ function deprecate(address implementation) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; /** * @title BridgeConnectorLib * @dev Library used to delegate-call bridge ops and decode return data correctly */ library BridgeConnectorLib { /** * @dev Delegate-calls a bridge to the bridge connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function bridge( address connector, uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) internal { bytes memory bridgeData = abi.encodeWithSelector( IBridgeConnector.bridge.selector, source, chainId, token, amountIn, minAmountOut, recipient, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(bridgeData); Address.verifyCallResult(success, returndata, 'BRIDGE_CALL_REVERTED'); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; /** * @title StrategyLib * @dev Library used to delegate-call to strategy and decode return data correctly */ library StrategyLib { /** * @dev Delegate-calls a claim to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function claim(address strategy, bytes memory data) internal returns (address[] memory, uint256[] memory) { bytes memory claimData = abi.encodeWithSelector(IStrategy.claim.selector, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(claimData); Address.verifyCallResult(success, returndata, 'CLAIM_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[])); } /** * @dev Delegate-calls a join to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory joinData = abi.encodeWithSelector(IStrategy.join.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(joinData); Address.verifyCallResult(success, returndata, 'JOIN_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } /** * @dev Delegate-calls a exit to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory exitData = abi.encodeWithSelector(IStrategy.exit.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(exitData); Address.verifyCallResult(success, returndata, 'EXIT_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; /** * @title SwapConnectorLib * @dev Library used to delegate-call swaps and decode return data correctly */ library SwapConnectorLib { /** * @dev Delegate-calls a swap to the swap connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function swap( address connector, uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) internal returns (uint256 amountOut) { bytes memory swapData = abi.encodeWithSelector( ISwapConnector.swap.selector, source, tokenIn, tokenOut, amountIn, minAmountOut, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(swapData); Address.verifyCallResult(success, returndata, 'SWAP_CALL_REVERTED'); return abi.decode(returndata, (uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/IPriceFeedProvider.sol'; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVault * @dev Mimic Smart Vault interface to manage assets. It must support also `IImplementation` and `IAuthorizer` */ interface ISmartVault is IPriceFeedProvider, IImplementation, IAuthorizer { enum SwapLimit { Slippage, MinAmountOut } enum BridgeLimit { Slippage, MinAmountOut } /** * @dev Emitted every time a new strategy is set for the Smart Vault */ event StrategySet(address indexed strategy, bool allowed); /** * @dev Emitted every time a new price oracle is set for the Smart Vault */ event PriceOracleSet(address indexed priceOracle); /** * @dev Emitted every time a new swap connector is set for the Smart Vault */ event SwapConnectorSet(address indexed swapConnector); /** * @dev Emitted every time a new bridge connector is set for the Smart Vault */ event BridgeConnectorSet(address indexed bridgeConnector); /** * @dev Emitted every time a new fee collector is set */ event FeeCollectorSet(address indexed feeCollector); /** * @dev Emitted every time the withdraw fee percentage is set */ event WithdrawFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the performance fee percentage is set */ event PerformanceFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the swap fee percentage is set */ event SwapFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the bridge fee percentage is set */ event BridgeFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time `call` is called */ event Call(address indexed target, bytes callData, uint256 value, bytes result, bytes data); /** * @dev Emitted every time `collect` is called */ event Collect(address indexed token, address indexed from, uint256 collected, bytes data); /** * @dev Emitted every time `withdraw` is called */ event Withdraw(address indexed token, address indexed recipient, uint256 withdrawn, uint256 fee, bytes data); /** * @dev Emitted every time `wrap` is called */ event Wrap(uint256 amount, uint256 wrapped, bytes data); /** * @dev Emitted every time `unwrap` is called */ event Unwrap(uint256 amount, uint256 unwrapped, bytes data); /** * @dev Emitted every time `claim` is called */ event Claim(address indexed strategy, address[] tokens, uint256[] amounts, bytes data); /** * @dev Emitted every time `join` is called */ event Join( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256 slippage, bytes data ); /** * @dev Emitted every time `exit` is called */ event Exit( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256[] fees, uint256 slippage, bytes data ); /** * @dev Emitted every time `swap` is called */ event Swap( uint8 indexed source, address indexed tokenIn, address indexed tokenOut, uint256 amountIn, uint256 amountOut, uint256 minAmountOut, uint256 fee, bytes data ); /** * @dev Emitted every time `bridge` is called */ event Bridge( uint8 indexed source, uint256 indexed chainId, address indexed token, uint256 amountIn, uint256 minAmountOut, uint256 fee, address recipient, bytes data ); /** * @dev Tells a strategy is allowed or not * @param strategy Address of the strategy being queried */ function isStrategyAllowed(address strategy) external view returns (bool); /** * @dev Tells the invested value for a strategy * @param strategy Address of the strategy querying the invested value of */ function investedValue(address strategy) external view returns (uint256); /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) external view returns (uint256); /** * @dev Tells the price oracle associated to a Smart Vault */ function priceOracle() external view returns (address); /** * @dev Tells the swap connector associated to a Smart Vault */ function swapConnector() external view returns (address); /** * @dev Tells the bridge connector associated to a Smart Vault */ function bridgeConnector() external view returns (address); /** * @dev Tells the address where fees will be deposited */ function feeCollector() external view returns (address); /** * @dev Tells the withdraw fee configuration */ function withdrawFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the performance fee configuration */ function performanceFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the swap fee configuration */ function swapFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the bridge fee configuration */ function bridgeFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the address of the wrapped native token */ function wrappedNativeToken() external view returns (address); /** * @dev Sets a new strategy as allowed or not for a Smart Vault * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external; /** * @dev Sets a new price oracle to a Smart Vault * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external; /** * @dev Sets a new swap connector to a Smart Vault * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external; /** * @dev Sets a new bridge connector to a Smart Vault * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external; /** * @dev Sets a new fee collector * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external; /** * @dev Sets a new withdraw fee configuration * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new performance fee configuration * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new swap fee configuration * @param pct Swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new bridge fee configuration * @param pct Bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) external view returns (uint256); /** * @dev Execute an arbitrary call from a Smart Vault * @param target Address where the call will be sent * @param callData Calldata to be used for the call * @param value Value in wei that will be attached to the call * @param data Extra data that may enable or not different behaviors depending on the implementation * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external returns (bytes memory result); /** * @dev Collect tokens from a sender to a Smart Vault * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data that may enable or not different behaviors depending on the implementation * @return collected Amount of tokens assigned to the Smart Vault */ function collect(address token, address from, uint256 amount, bytes memory data) external returns (uint256 collected); /** * @dev Withdraw tokens to an external account * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data that may enable or not different behaviors depending on the implementation * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external returns (uint256 withdrawn); /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it * @param amount Amount of native tokens to be wrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external returns (uint256 wrapped); /** * @dev Unwrap an amount of wrapped native tokens * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external returns (uint256 unwrapped); /** * @dev Claim strategy rewards * @param strategy Address of the strategy to claim rewards * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join a strategy with an amount of tokens * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Exit a strategy * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Swaps two tokens * @param source Source to request the swap. It depends on the Swap Connector attached to a Smart Vault. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Extra data that may enable or not different behaviors depending on the implementation * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external returns (uint256 amountOut); /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Extra data that may enable or not different behaviors depending on the implementation * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external returns (uint256 bridged); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVaultsFactory * @dev Smart Vaults Factory interface, it must follow the IImplementation interface. */ interface ISmartVaultsFactory is IImplementation { /** * @dev Emitted every time a new Smart Vault instance is created */ event Created(address indexed implementation, address indexed instance, bytes initializeResult); /** * @dev Tells the implementation associated to a contract instance * @param instance Address of the instance to request it's implementation */ function implementationOf(address instance) external view returns (address); /** * @dev Creates a new Smart Vault pointing to a registered implementation * @param salt Salt bytes to derivate the address of the new instance * @param implementation Address of the implementation to be instanced * @param initializeData Arbitrary data to be sent after deployment * @return instance Address of the new instance created */ function create(bytes32 salt, address implementation, bytes memory initializeData) external returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@openzeppelin/contracts/utils/math/Math.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import '@mimic-fi/v2-helpers/contracts/utils/IWrappedNativeToken.sol'; import '@mimic-fi/v2-price-oracle/contracts/oracle/IPriceOracle.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/PriceFeedProvider.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/InitializableAuthorizedImplementation.sol'; import './ISmartVault.sol'; import './helpers/StrategyLib.sol'; import './helpers/SwapConnectorLib.sol'; import './helpers/BridgeConnectorLib.sol'; /** * @title Smart Vault * @dev Smart Vault contract where funds are being held offering a bunch of primitives to allow users model any * type of action to manage them, these are: collector, withdraw, swap, bridge, join, exit, bridge, wrap, and unwrap. * * It inherits from InitializableAuthorizedImplementation which means it's implementation can be cloned * from the Mimic Registry and should be initialized depending on each case. */ contract SmartVault is ISmartVault, PriceFeedProvider, InitializableAuthorizedImplementation { using SafeERC20 for IERC20; using FixedPoint for uint256; using UncheckedMath for uint256; using StrategyLib for address; using SwapConnectorLib for address; using BridgeConnectorLib for address; // Namespace under which the Smart Vault is registered in the Mimic Registry bytes32 public constant override NAMESPACE = keccak256('SMART_VAULT'); /** * @dev Fee configuration parameters * @param pct Percentage expressed using 16 decimals (1e18 = 100%) * @param cap Maximum amount of fees to be charged per period * @param token Address of the token to express the cap amount * @param period Period length in seconds * @param totalCharged Total amount of fees charged in the current period * @param nextResetTime Current cap period end date */ struct Fee { uint256 pct; uint256 cap; address token; uint256 period; uint256 totalCharged; uint256 nextResetTime; } // Price oracle reference address public override priceOracle; // Swap connector reference address public override swapConnector; // Bridge connector reference address public override bridgeConnector; // List of allowed strategies indexed by strategy address mapping (address => bool) public override isStrategyAllowed; // List of invested values indexed by strategy address mapping (address => uint256) public override investedValue; // Fee collector address where fees will be deposited address public override feeCollector; // Withdraw fee configuration Fee public override withdrawFee; // Performance fee configuration Fee public override performanceFee; // Swap fee configuration Fee public override swapFee; // Bridge fee configuration Fee public override bridgeFee; // Wrapped native token reference address public immutable override wrappedNativeToken; /** * @dev Creates a new Smart Vault implementation with references that should be shared among all implementations * @param _wrappedNativeToken Address of the wrapped native token to be used * @param _registry Address of the Mimic Registry to be referenced */ constructor(address _wrappedNativeToken, address _registry) InitializableAuthorizedImplementation(_registry) { wrappedNativeToken = _wrappedNativeToken; } /** * @dev Initializes the Smart Vault instance * @param admin Address that will be granted with admin rights */ function initialize(address admin) external initializer { _initialize(admin); } /** * @dev It allows receiving native token transfers */ receive() external payable { // solhint-disable-previous-line no-empty-blocks } /** * @dev Sets a new strategy as allowed or not for a Smart Vault. Sender must be authorized. * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external override auth { _setStrategy(strategy, allowed); } /** * @dev Sets a new price oracle to a Smart Vault. Sender must be authorized. * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external override auth { _setPriceOracle(newPriceOracle); } /** * @dev Sets a new swap connector to a Smart Vault. Sender must be authorized. * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external override auth { _setSwapConnector(newSwapConnector); } /** * @dev Sets a new bridge connector to a Smart Vault. Sender must be authorized. * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external override auth { _setBridgeConnector(newBridgeConnector); } /** * @dev Sets a new fee collector. Sender must be authorized. * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external override auth { _setFeeCollector(newFeeCollector); } /** * @dev Sets a new withdraw fee. Sender must be authorized. * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(withdrawFee, pct, cap, token, period); emit WithdrawFeeSet(pct, cap, token, period); } /** * @dev Sets a new performance fee. Sender must be authorized. * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(performanceFee, pct, cap, token, period); emit PerformanceFeeSet(pct, cap, token, period); } /** * @dev Sets a new swap fee. Sender must be authorized. * @param pct New swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(swapFee, pct, cap, token, period); emit SwapFeeSet(pct, cap, token, period); } /** * @dev Sets a new bridge fee. Sender must be authorized. * @param pct New bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(bridgeFee, pct, cap, token, period); emit BridgeFeeSet(pct, cap, token, period); } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public override(IPriceFeedProvider, PriceFeedProvider) auth { super.setPriceFeed(base, quote, feed); } /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) public view override returns (uint256) { return IPriceOracle(priceOracle).getPrice(address(this), base, quote); } /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) public view override returns (uint256) { return IStrategy(strategy).lastValue(address(this)); } /** * @dev Execute an arbitrary call from a Smart Vault. Sender must be authorized. * @param target Address where the call will be sent * @param data Calldata to be used for the call * @param value Value in wei that will be attached to the call * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external override auth returns (bytes memory result) { result = Address.functionCallWithValue(target, callData, value, 'SMART_VAULT_ARBITRARY_CALL_FAIL'); emit Call(target, callData, value, result, data); } /** * @dev Collect tokens from an external account to a Smart Vault. Sender must be authorized. * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data only logged * @return collected Amount of tokens collected */ function collect(address token, address from, uint256 amount, bytes memory data) external override auth returns (uint256 collected) { require(amount > 0, 'COLLECT_AMOUNT_ZERO'); uint256 previousBalance = IERC20(token).balanceOf(address(this)); IERC20(token).safeTransferFrom(from, address(this), amount); uint256 currentBalance = IERC20(token).balanceOf(address(this)); collected = currentBalance - previousBalance; emit Collect(token, from, collected, data); } /** * @dev Withdraw tokens to an external account. Sender must be authorized. * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data only logged * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external override auth returns (uint256 withdrawn) { require(amount > 0, 'WITHDRAW_AMOUNT_ZERO'); require(recipient != address(0), 'RECIPIENT_ZERO'); uint256 withdrawFeeAmount = recipient == feeCollector ? 0 : _payFee(token, amount, withdrawFee); withdrawn = amount - withdrawFeeAmount; _safeTransfer(token, recipient, withdrawn); emit Withdraw(token, recipient, withdrawn, withdrawFeeAmount, data); } /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it. Sender must be authorized. * @param amount Amount of native tokens to be wrapped * @param data Extra data only logged * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external override auth returns (uint256 wrapped) { require(amount > 0, 'WRAP_AMOUNT_ZERO'); require(address(this).balance >= amount, 'WRAP_INSUFFICIENT_AMOUNT'); IWrappedNativeToken wrappedToken = IWrappedNativeToken(wrappedNativeToken); uint256 previousBalance = wrappedToken.balanceOf(address(this)); wrappedToken.deposit{ value: amount }(); uint256 currentBalance = wrappedToken.balanceOf(address(this)); wrapped = currentBalance - previousBalance; emit Wrap(amount, wrapped, data); } /** * @dev Unwrap an amount of wrapped native tokens. Sender must be authorized. * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data only logged * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external override auth returns (uint256 unwrapped) { require(amount > 0, 'UNWRAP_AMOUNT_ZERO'); uint256 previousBalance = address(this).balance; IWrappedNativeToken(wrappedNativeToken).withdraw(amount); uint256 currentBalance = address(this).balance; unwrapped = currentBalance - previousBalance; emit Unwrap(amount, unwrapped, data); } /** * @dev Claim strategy rewards. Sender must be authorized. * @param strategy Address of the strategy to claim rewards * @param data Extra data passed to the strategy and logged * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external override auth returns (address[] memory tokens, uint256[] memory amounts) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); (tokens, amounts) = strategy.claim(data); emit Claim(strategy, tokens, amounts, data); } /** * @dev Join a strategy with an amount of tokens. Sender must be authorized. * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(slippage <= FixedPoint.ONE, 'JOIN_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'JOIN_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.join(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'JOIN_OUTPUT_INVALID_LENGTH'); investedValue[strategy] = investedValue[strategy] + value; emit Join(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, slippage, data); } /** * @dev Exit a strategy. Sender must be authorized. * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(investedValue[strategy] > 0, 'EXIT_NO_INVESTED_VALUE'); require(slippage <= FixedPoint.ONE, 'EXIT_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'EXIT_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.exit(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'EXIT_OUTPUT_INVALID_LENGTH'); uint256[] memory performanceFeeAmounts = new uint256[](amountsOut.length); // It can rely on the last updated value since we have just exited, no need to compute current value uint256 valueBeforeExit = lastValue(strategy) + value; if (valueBeforeExit <= investedValue[strategy]) { // There were losses, invested value is simply reduced using the exited ratio compared to the value // before exit. Invested value is round up to avoid interpreting losses due to rounding errors investedValue[strategy] -= investedValue[strategy].mulUp(value).divUp(valueBeforeExit); } else { // If value gains are greater than the exit value, it means only gains are being withdrawn. In that case // the taxable amount is the entire exited amount, otherwise it should be the equivalent gains ratio of it. uint256 valueGains = valueBeforeExit.uncheckedSub(investedValue[strategy]); bool onlyGains = valueGains >= value; // If the exit value is greater than the value gains, the invested value should be reduced by the portion // of the invested value being exited. Otherwise, it's still the same, only gains are being withdrawn. // No need for checked math as we are checking it manually beforehand uint256 decrement = onlyGains ? 0 : value.uncheckedSub(valueGains); investedValue[strategy] = investedValue[strategy] - decrement; // Compute performance fees per token out for (uint256 i = 0; i < tokensOut.length; i = i.uncheckedAdd(1)) { address token = tokensOut[i]; uint256 amount = amountsOut[i]; uint256 taxableAmount = onlyGains ? amount : ((amount * valueGains) / value); uint256 feeAmount = _payFee(token, taxableAmount, performanceFee); amountsOut[i] = amount - feeAmount; performanceFeeAmounts[i] = feeAmount; } } emit Exit(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, performanceFeeAmounts, slippage, data); } /** * @dev Swaps two tokens. Sender must be authorized. * @param source Source to request the swap: Uniswap V2, Uniswap V3, Balancer V2, or Paraswap V5. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Encoded data to specify different swap parameters depending on the source picked * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external override auth returns (uint256 amountOut) { require(tokenIn != tokenOut, 'SWAP_SAME_TOKEN'); require(swapConnector != address(0), 'SWAP_CONNECTOR_NOT_SET'); uint256 minAmountOut; if (limitType == SwapLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == SwapLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'SWAP_SLIPPAGE_ABOVE_ONE'); uint256 price = getPrice(tokenIn, tokenOut); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = amountIn.mulUp(price).mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('SWAP_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(tokenIn).balanceOf(address(this)); uint256 preBalanceOut = IERC20(tokenOut).balanceOf(address(this)); swapConnector.swap(source, tokenIn, tokenOut, amountIn, minAmountOut, data); uint256 postBalanceIn = IERC20(tokenIn).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - amountIn, 'SWAP_BAD_TOKEN_IN_BALANCE'); uint256 amountOutBeforeFees = IERC20(tokenOut).balanceOf(address(this)) - preBalanceOut; require(amountOutBeforeFees >= minAmountOut, 'SWAP_MIN_AMOUNT'); uint256 swapFeeAmount = _payFee(tokenOut, amountOutBeforeFees, swapFee); amountOut = amountOutBeforeFees - swapFeeAmount; emit Swap(source, tokenIn, tokenOut, amountIn, amountOut, minAmountOut, swapFeeAmount, data); } /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Bridge limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Encoded data to specify different bridge parameters depending on the source picked * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external override auth returns (uint256 bridged) { require(block.chainid != chainId, 'BRIDGE_SAME_CHAIN'); require(recipient != address(0), 'BRIDGE_RECIPIENT_ZERO'); require(bridgeConnector != address(0), 'BRIDGE_CONNECTOR_NOT_SET'); uint256 bridgeFeeAmount = _payFee(token, amount, bridgeFee); bridged = amount - bridgeFeeAmount; uint256 minAmountOut; if (limitType == BridgeLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == BridgeLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'BRIDGE_SLIPPAGE_ABOVE_ONE'); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = bridged.mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('BRIDGE_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(token).balanceOf(address(this)); bridgeConnector.bridge(source, chainId, token, bridged, minAmountOut, recipient, data); uint256 postBalanceIn = IERC20(token).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - bridged, 'BRIDGE_BAD_TOKEN_IN_BALANCE'); emit Bridge(source, chainId, token, bridged, minAmountOut, bridgeFeeAmount, recipient, data); } /** * @dev Internal function to pay the amount of fees to be charged based on a fee configuration to the fee collector * @param token Token being charged * @param amount Token amount to be taxed with fees * @param fee Fee configuration to be applied * @return paidAmount Amount of fees paid to the fee collector */ function _payFee(address token, uint256 amount, Fee storage fee) internal returns (uint256 paidAmount) { // Fee amounts are always rounded down uint256 feeAmount = amount.mulDown(fee.pct); // If cap amount or cap period are not set, charge the entire amount if (fee.token == address(0) || fee.cap == 0 || fee.period == 0) { _safeTransfer(token, feeCollector, feeAmount); return feeAmount; } // Reset cap totalizator if necessary if (block.timestamp >= fee.nextResetTime) { fee.totalCharged = 0; fee.nextResetTime = block.timestamp + fee.period; } // Calc fee amount in the fee token used for the cap uint256 feeTokenPrice = getPrice(token, fee.token); uint256 feeAmountInFeeToken = feeAmount.mulDown(feeTokenPrice); // Compute fee amount picking the minimum between the chargeable amount and the remaining part for the cap if (fee.totalCharged + feeAmountInFeeToken <= fee.cap) { paidAmount = feeAmount; fee.totalCharged += feeAmountInFeeToken; } else if (fee.totalCharged < fee.cap) { paidAmount = (fee.cap.uncheckedSub(fee.totalCharged) * feeAmount) / feeAmountInFeeToken; fee.totalCharged = fee.cap; } else { // This case is when the total charged amount is already greater than the cap amount. It could happen if // the cap amounts is decreased or if the cap token is changed. In this case the total charged amount is // not updated, and the amount to paid is zero. paidAmount = 0; } // Pay fee amount to the fee collector _safeTransfer(token, feeCollector, paidAmount); } /** * @dev Internal method to transfer ERC20 or native tokens from a Smart Vault * @param token Address of the ERC20 token to transfer * @param to Address transferring the tokens to * @param amount Amount of tokens to transfer */ function _safeTransfer(address token, address to, uint256 amount) internal { if (amount == 0) return; if (Denominations.isNativeToken(token)) Address.sendValue(payable(to), amount); else IERC20(token).safeTransfer(to, amount); } /** * @dev Sets a new strategy as allowed or not * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function _setStrategy(address strategy, bool allowed) internal { if (allowed) _validateStatelessDependency(strategy); isStrategyAllowed[strategy] = allowed; emit StrategySet(strategy, allowed); } /** * @dev Sets a new price oracle * @param newPriceOracle New price oracle to be set */ function _setPriceOracle(address newPriceOracle) internal { _validateStatelessDependency(newPriceOracle); priceOracle = newPriceOracle; emit PriceOracleSet(newPriceOracle); } /** * @dev Sets a new swap connector * @param newSwapConnector New swap connector to be set */ function _setSwapConnector(address newSwapConnector) internal { _validateStatelessDependency(newSwapConnector); swapConnector = newSwapConnector; emit SwapConnectorSet(newSwapConnector); } /** * @dev Sets a new bridge connector * @param newBridgeConnector New bridge connector to be set */ function _setBridgeConnector(address newBridgeConnector) internal { _validateStatelessDependency(newBridgeConnector); bridgeConnector = newBridgeConnector; emit BridgeConnectorSet(newBridgeConnector); } /** * @dev Internal method to set the fee collector * @param newFeeCollector New fee collector to be set */ function _setFeeCollector(address newFeeCollector) internal { require(newFeeCollector != address(0), 'FEE_COLLECTOR_ZERO'); feeCollector = newFeeCollector; emit FeeCollectorSet(newFeeCollector); } /** * @dev Internal method to set a new fee cap configuration * @param fee Fee configuration to be updated * @param pct Fee percentage to be set * @param cap New maximum amount of fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds */ function _setFeeConfiguration(Fee storage fee, uint256 pct, uint256 cap, address token, uint256 period) internal { require(pct <= FixedPoint.ONE, 'FEE_PCT_ABOVE_ONE'); // If there is no fee percentage, there must not be a fee cap bool isZeroCap = token == address(0) && cap == 0 && period == 0; require(pct != 0 || isZeroCap, 'INVALID_CAP_WITH_FEE_ZERO'); // If there is a cap, all values must be non-zero bool isNonZeroCap = token != address(0) && cap != 0 && period != 0; require(isZeroCap || isNonZeroCap, 'INCONSISTENT_CAP_VALUES'); // Changing the fee percentage does not affect the totalizator at all, it only affects future fee charges fee.pct = pct; // Changing the fee cap amount does not affect the totalizator, it only applies when changing the for the total // charged amount. Note that it can happen that the cap amount is lower than the total charged amount if the // cap amount is lowered. However, there shouldn't be any accounting issues with that. fee.cap = cap; // Changing the cap period only affects the end time of the next period, but not the end date of the current one fee.period = period; // Therefore, only clean the totalizators if the cap is being removed if (isZeroCap) { fee.totalCharged = 0; fee.nextResetTime = 0; } else { // If cap values are not zero, set the next reset time if it wasn't set already // Otherwise, if the cap token is being changed the total charged amount must be updated accordingly if (fee.nextResetTime == 0) { fee.nextResetTime = block.timestamp + period; } else if (fee.token != token) { uint256 newTokenPrice = getPrice(fee.token, token); fee.totalCharged = fee.totalCharged.mulDown(newTokenPrice); } } // Finally simply set the new requested token fee.token = token; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/security/ReentrancyGuard.sol'; import '@mimic-fi/v2-smart-vault/contracts/ISmartVault.sol'; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import '@mimic-fi/v2-helpers/contracts/utils/ERC20Helpers.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseAuthorizedImplementation.sol'; import './IAction.sol'; /** * @title BaseAction * @dev Simple action implementation with a Smart Vault reference and using the Authorizer mixin */ contract BaseAction is IAction, BaseAuthorizedImplementation, ReentrancyGuard { bytes32 public constant override NAMESPACE = keccak256('ACTION'); // Smart Vault reference ISmartVault public override smartVault; /** * @dev Emitted every time a new smart vault is set */ event SmartVaultSet(address indexed smartVault); /** * @dev Creates a new BaseAction * @param admin Address to be granted authorize and unauthorize permissions * @param registry Address of the Mimic Registry */ constructor(address admin, address registry) BaseAuthorizedImplementation(admin, registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Sets the Smart Vault tied to the Action. Sender must be authorized. It can be set only once. * @param newSmartVault Address of the smart vault to be set */ function setSmartVault(address newSmartVault) external auth { require(address(smartVault) == address(0), 'SMART_VAULT_ALREADY_SET'); smartVault = ISmartVault(newSmartVault); emit SmartVaultSet(newSmartVault); } /** * @dev Tells the balance of the Smart Vault for a given token * @param token Address of the token querying the balance of * @notice Denominations.NATIVE_TOKEN_ADDRESS can be used to query the native token balance */ function _balanceOf(address token) internal view returns (uint256) { return ERC20Helpers.balanceOf(token, address(smartVault)); } /** * @dev Tells the wrapped native token address if the given address is the native token * @param token Address of the token to be checked */ function _wrappedIfNative(address token) internal view returns (address) { return Denominations.isNativeToken(token) ? smartVault.wrappedNativeToken() : token; } /** * @dev Tells whether the given token is either the native or wrapped native token * @param token Address of the token being queried */ function _isWrappedOrNativeToken(address token) internal view returns (bool) { return Denominations.isNativeToken(token) || token == smartVault.wrappedNativeToken(); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-smart-vault/contracts/ISmartVault.sol'; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; /** * @title IAction * @dev Action interface it must follow the IAuthorizer interface */ interface IAction is IAuthorizer { /** * @dev Emitted every time an action is executed */ event Executed(); /** * @dev Tells the address of the Smart Vault tied to it, it cannot be changed */ function smartVault() external view returns (ISmartVault); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import './BaseAction.sol'; abstract contract ReceiverAction is BaseAction { using SafeERC20 for IERC20; receive() external payable { // solhint-disable-previous-line no-empty-blocks } function transferToSmartVault(address token, uint256 amount) external auth { _transferToSmartVault(token, amount); } function _transferToSmartVault(address token, uint256 amount) internal { ERC20Helpers.transfer(token, address(smartVault), amount); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import './BaseAction.sol'; /** * @title RelayedAction * @dev Action that offers a relayed mechanism to allow reimbursing tx costs after execution in any ERC20 token. * This type of action at least require having withdraw permissions from the Smart Vault tied to it. */ abstract contract RelayedAction is BaseAction { using FixedPoint for uint256; // Base gas amount charged to cover default amounts // solhint-disable-next-line func-name-mixedcase function BASE_GAS() external view virtual returns (uint256); // Note to be used to mark tx cost payments bytes private constant REDEEM_GAS_NOTE = bytes('RELAYER'); // Internal variable used to allow a better developer experience to reimburse tx gas cost uint256 private _initialGas; // Gas price limit expressed in the native token, if surpassed it wont relay the transaction uint256 public gasPriceLimit; // Total transaction cost limit expressed in the native token, if surpassed it wont relay the transaction uint256 public txCostLimit; // List of allowed relayers indexed by address mapping (address => bool) public isRelayer; /** * @dev Emitted every time the relayers list is changed */ event RelayerSet(address indexed relayer, bool allowed); /** * @dev Emitted every time the relayer limits are set */ event LimitsSet(uint256 gasPriceLimit, uint256 txCostLimit); /** * @dev Modifier that can be used to reimburse the gas cost of the tagged function paying in a specific token */ modifier redeemGas(address token) { _initRelayedTx(); _; _payRelayedTx(token); } /** * @dev Sets a relayer address. Sender must be authorized. * @param relayer Address of the relayer to be set * @param allowed Whether it should be allowed or not */ function setRelayer(address relayer, bool allowed) external auth { isRelayer[relayer] = allowed; emit RelayerSet(relayer, allowed); } /** * @dev Sets the relayer limits. Sender must be authorized. * @param _gasPriceLimit New gas price limit to be set * @param _txCostLimit New total cost limit to be set */ function setLimits(uint256 _gasPriceLimit, uint256 _txCostLimit) external auth { gasPriceLimit = _gasPriceLimit; txCostLimit = _txCostLimit; emit LimitsSet(_gasPriceLimit, _txCostLimit); } /** * @dev Internal init hook used for relayed txs. It checks tx limit validations only when the sender is a relayer. */ function _initRelayedTx() internal { if (!isRelayer[msg.sender]) return; _initialGas = gasleft(); uint256 limit = gasPriceLimit; require(limit == 0 || tx.gasprice <= limit, 'GAS_PRICE_ABOVE_LIMIT'); } /** * @dev Internal function to pay for a relayed tx. Only when the sender is marked as a relayer. * @param token Address of the token to use in order to pay the tx cost * @return Amount of tokens paid to reimburse the tx cost */ function _payRelayedTx(address token) internal returns (uint256) { (bool success, uint256 price) = _tryGetNativeTokenPriceIn(token); if (success) return _payRelayedTx(token, price); delete _initialGas; return 0; } /** * @dev Internal after call hook where tx cost is reimbursed. Only when the sender is marked as a relayer. * @param token Address of the token to use in order to pay the tx cost * @param price Price of the native token expressed in the given token quote * @return Amount of tokens paid to reimburse the tx cost */ function _payRelayedTx(address token, uint256 price) internal returns (uint256) { if (!isRelayer[msg.sender]) return 0; require(_initialGas > 0, 'RELAYED_TX_NOT_INITIALIZED'); uint256 limit = txCostLimit; uint256 totalGas = _initialGas - gasleft(); uint256 totalCostNative = (totalGas + RelayedAction(this).BASE_GAS()) * tx.gasprice; require(limit == 0 || totalCostNative <= limit, 'TX_COST_ABOVE_LIMIT'); // Total cost is rounded down to make sure we always match at least the threshold uint256 totalCostToken = totalCostNative.mulDown(price); smartVault.withdraw(token, totalCostToken, smartVault.feeCollector(), REDEEM_GAS_NOTE); delete _initialGas; return totalCostToken; } /** * @dev Tries getting the price of the native token quoted in a another token * @param token Address of the token to quote the native token in * @return success Whether the price query to the smart vault succeeded or not * @return price The price fetched or zero if the query didn't succeed */ function _tryGetNativeTokenPriceIn(address token) internal view virtual returns (bool success, uint256 price) { if (_isWrappedOrNativeToken(token)) return (true, FixedPoint.ONE); try smartVault.getPrice(smartVault.wrappedNativeToken(), token) returns (uint256 result) { return (true, result); } catch { return (false, 0); } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './BaseAction.sol'; /** * @title Time-locked action * @dev Action that offers a time-lock mechanism to allow executing it only once during a set period of time */ abstract contract TimeLockedAction is BaseAction { // Period in seconds uint256 public period; // Next timestamp in the future when the action can be executed again uint256 public nextResetTime; /** * @dev Emitted every time a time-lock is set */ event TimeLockSet(uint256 period); /** * @dev Creates a new time-locked action */ constructor() { nextResetTime = block.timestamp; } /** * @dev Sets a new period for the time-locked action * @param newPeriod New period to be set */ function setTimeLock(uint256 newPeriod) external auth { period = newPeriod; emit TimeLockSet(newPeriod); } /** * @dev Internal function to tell whether the current time-lock has passed */ function _passesTimeLock() internal view returns (bool) { return block.timestamp >= nextResetTime; } /** * @dev Internal function to validate the time-locked action */ function _validateTimeLock() internal { require(_passesTimeLock(), 'TIME_LOCK_NOT_EXPIRED'); nextResetTime = block.timestamp + period; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import './BaseAction.sol'; /** * @title TokenThresholdAction * @dev Action that offers a token threshold limit. It can be used for minimum swap amounts, or minimum withdrawal * amounts, etc. This type of action does not require any specific permission on the Smart Vault. */ abstract contract TokenThresholdAction is BaseAction { using FixedPoint for uint256; address public thresholdToken; uint256 public thresholdAmount; event ThresholdSet(address indexed token, uint256 amount); /** * @dev Sets a new threshold configuration. Sender must be authorized. * @param token New token threshold to be set * @param amount New amount threshold to be set */ function setThreshold(address token, uint256 amount) external auth { thresholdToken = token; thresholdAmount = amount; emit ThresholdSet(token, amount); } /** * @dev Internal function to check the set threshold * @param token Token address of the given amount to evaluate the threshold * @param amount Amount of tokens to validate the threshold */ function _passesThreshold(address token, uint256 amount) internal view returns (bool) { uint256 price = smartVault.getPrice(_wrappedIfNative(token), thresholdToken); return _passesThreshold(amount, price); } /** * @dev Internal function to check the set threshold * @param amount Amount of tokens to validate the threshold * @param price Price of the given token amount quoted in the threshold token */ function _passesThreshold(uint256 amount, uint256 price) internal view returns (bool) { // Result balance is rounded down to make sure we always match at least the threshold return amount.mulDown(price) >= thresholdAmount; } /** * @dev Internal function to validate the set threshold * @param token Token address of the given amount to evaluate the threshold * @param amount Amount of tokens to validate the threshold */ function _validateThreshold(address token, uint256 amount) internal view { require(_passesThreshold(token, amount), 'MIN_THRESHOLD_NOT_MET'); } /** * @dev Internal function to validate the set threshold * @param amount Amount of tokens to validate the threshold * @param price Price of the given token amount quoted in the threshold token */ function _validateThreshold(uint256 amount, uint256 price) internal view { require(_passesThreshold(amount, price), 'MIN_THRESHOLD_NOT_MET'); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import './BaseAction.sol'; /** * @title Withdrawal action * @dev Action that offers a recipient address where funds can be withdrawn. This type of action at least require * having withdraw permissions from the Smart Vault tied to it. */ abstract contract WithdrawalAction is BaseAction { // Address where tokens will be transferred to address public recipient; /** * @dev Emitted every time the recipient is set */ event RecipientSet(address indexed recipient); /** * @dev Sets the recipient address. Sender must be authorized. * @param newRecipient Address of the new recipient to be set */ function setRecipient(address newRecipient) external auth { require(newRecipient != address(0), 'RECIPIENT_ZERO'); recipient = newRecipient; emit RecipientSet(newRecipient); } /** * @dev Internal function to withdraw all the available balance of a token from the Smart Vault to the recipient * @param token Address of the token to be withdrawn */ function _withdraw(address token) internal { uint256 balance = _balanceOf(token); _withdraw(token, balance); } /** * @dev Internal function to withdraw a specific amount of a token from the Smart Vault to the recipient * @param token Address of the token to be withdrawn * @param amount Amount of tokens to be withdrawn */ function _withdraw(address token, uint256 amount) internal { smartVault.withdraw(token, amount, recipient, new bytes(0)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-smart-vault/contracts/SmartVault.sol'; import '@mimic-fi/v2-smart-vault/contracts/ISmartVaultsFactory.sol'; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import '@mimic-fi/v2-registry/contracts/registry/IRegistry.sol'; import '../actions/ReceiverAction.sol'; import '../actions/RelayedAction.sol'; import '../actions/TimeLockedAction.sol'; import '../actions/TokenThresholdAction.sol'; import '../actions/WithdrawalAction.sol'; import '../permissions/PermissionsManager.sol'; import '../permissions/PermissionsHelpers.sol'; /** * @title Deployer * @dev Deployer library offering a bunch of set-up methods to deploy and customize smart vaults */ library Deployer { using UncheckedMath for uint256; using PermissionsHelpers for PermissionsManager; // Namespace to use by this deployer to fetch ISmartVaultFactory implementations from the Mimic Registry bytes32 private constant SMART_VAULT_FACTORY_NAMESPACE = keccak256('SMART_VAULTS_FACTORY'); // Namespace to use by this deployer to fetch ISmartVault implementations from the Mimic Registry bytes32 private constant SMART_VAULT_NAMESPACE = keccak256('SMART_VAULT'); // Namespace to use by this deployer to fetch IStrategy implementations from the Mimic Registry bytes32 private constant STRATEGY_NAMESPACE = keccak256('STRATEGY'); // Namespace to use by this deployer to fetch IPriceOracle implementations from the Mimic Registry bytes32 private constant PRICE_ORACLE_NAMESPACE = keccak256('PRICE_ORACLE'); // Namespace to use by this deployer to fetch ISwapConnector implementations from the Mimic Registry bytes32 private constant SWAP_CONNECTOR_NAMESPACE = keccak256('SWAP_CONNECTOR'); // Namespace to use by this deployer to fetch IBridgeConnector implementations from the Mimic Registry bytes32 private constant BRIDGE_CONNECTOR_NAMESPACE = keccak256('BRIDGE_CONNECTOR'); /** * @dev Smart vault params * @param factory Address of the factory that will be used to deploy an instance of the Smart Vault implementation * @param impl Address of the Smart Vault implementation to be used * @param salt Salt bytes to derivate the address of the new Smart Vault instance * @param admin Address that will be granted with admin rights for the deployed Smart Vault * @param bridgeConnector Optional Bridge Connector to set for the Smart Vault * @param swapConnector Optional Swap Connector to set for the Smart Vault * @param strategies List of strategies to be allowed for the Smart Vault * @param priceOracle Optional Price Oracle to set for the Smart Vault * @param priceFeedParams List of price feeds to be set for the Smart Vault * @param feeCollector Address to be set as the fee collector * @param swapFee Swap fee params * @param bridgeFee Bridge fee params * @param withdrawFee Withdraw fee params * @param performanceFee Performance fee params */ struct SmartVaultParams { address factory; address impl; bytes32 salt; address admin; address[] strategies; address bridgeConnector; address swapConnector; address priceOracle; PriceFeedParams[] priceFeedParams; address feeCollector; address feeCollectorAdmin; SmartVaultFeeParams swapFee; SmartVaultFeeParams bridgeFee; SmartVaultFeeParams withdrawFee; SmartVaultFeeParams performanceFee; } /** * @dev Smart Vault price feed params * @param base Base token of the price feed * @param quote Quote token of the price feed * @param feed Address of the price feed */ struct PriceFeedParams { address base; address quote; address feed; } /** * @dev Smart Vault fee configuration parameters * @param pct Percentage expressed using 16 decimals (1e18 = 100%) * @param cap Maximum amount of fees to be charged per period * @param token Address of the token to express the cap amount * @param period Period length in seconds */ struct SmartVaultFeeParams { uint256 pct; uint256 cap; address token; uint256 period; } /** * @dev Relayed action params * @param relayers List of addresses to be marked as allowed executors and in particular as authorized relayers * @param gasPriceLimit Gas price limit to be used for the relayed action * @param txCostLimit Total transaction cost limit to be used for the relayed action */ struct RelayedActionParams { address[] relayers; uint256 gasPriceLimit; uint256 txCostLimit; } /** * @dev Token threshold action params * @param token Address of the token of the threshold * @param amount Amount of tokens of the threshold */ struct TokenThresholdActionParams { address token; uint256 amount; } /** * @dev Time-locked action params * @param period Period in seconds to be set for the time lock */ struct TimeLockedActionParams { uint256 period; } /** * @dev Withdrawal action params * @param recipient Address that will receive the funds from the withdraw action */ struct WithdrawalActionParams { address recipient; } /** * @dev Transfer Permission Manager control to a list of owners * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param owners Addresses that will be able to call the permission manager */ function transferPermissionManagerControl(PermissionsManager manager, address[] memory owners) external { manager.authorize(manager, owners, manager.execute.selector); manager.unauthorize(manager, address(this), manager.execute.selector); } /** * @dev Create a new Smart Vault instance * @param registry Address of the registry to validate the Smart Vault implementation * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param params Params to customize the Smart Vault to be deployed * creating the Smart Vault. Sometimes this is not desired if further customization might take in place. */ function createSmartVault(IRegistry registry, PermissionsManager manager, SmartVaultParams memory params) external returns (SmartVault smartVault) { require(params.admin != address(0), 'SMART_VAULT_ADMIN_ZERO'); require(params.feeCollectorAdmin != address(0), 'SMART_VAULT_FEE_ADMIN_ZERO'); // Clone requested Smart Vault implementation and initialize require(registry.isActive(SMART_VAULT_FACTORY_NAMESPACE, params.factory), 'BAD_SMART_VAULT_FACTORY_IMPL'); ISmartVaultsFactory factory = ISmartVaultsFactory(params.factory); bytes memory initializeData = abi.encodeWithSelector(SmartVault.initialize.selector, address(manager)); bytes32 senderSalt = keccak256(abi.encodePacked(msg.sender, params.salt)); smartVault = SmartVault(payable(factory.create(senderSalt, params.impl, initializeData))); // Authorize admin to perform any action except from fee collector setter bytes4[] memory whats = new bytes4[](19); whats[0] = smartVault.collect.selector; whats[1] = smartVault.withdraw.selector; whats[2] = smartVault.wrap.selector; whats[3] = smartVault.unwrap.selector; whats[4] = smartVault.claim.selector; whats[5] = smartVault.join.selector; whats[6] = smartVault.exit.selector; whats[7] = smartVault.swap.selector; whats[8] = smartVault.bridge.selector; whats[9] = smartVault.setStrategy.selector; whats[10] = smartVault.setPriceFeed.selector; whats[11] = smartVault.setPriceFeeds.selector; whats[12] = smartVault.setPriceOracle.selector; whats[13] = smartVault.setSwapConnector.selector; whats[14] = smartVault.setBridgeConnector.selector; whats[15] = smartVault.setWithdrawFee.selector; whats[16] = smartVault.setPerformanceFee.selector; whats[17] = smartVault.setSwapFee.selector; whats[18] = smartVault.setBridgeFee.selector; manager.authorize(smartVault, params.admin, whats); // Set price feeds if any if (params.priceFeedParams.length > 0) { manager.authorize(smartVault, address(this), smartVault.setPriceFeed.selector); for (uint256 i = 0; i < params.priceFeedParams.length; i = i.uncheckedAdd(1)) { PriceFeedParams memory feedParams = params.priceFeedParams[i]; smartVault.setPriceFeed(feedParams.base, feedParams.quote, feedParams.feed); } manager.unauthorize(smartVault, address(this), smartVault.setPriceFeed.selector); } // Set price oracle if given if (params.priceOracle != address(0)) { require(registry.isActive(PRICE_ORACLE_NAMESPACE, params.priceOracle), 'BAD_PRICE_ORACLE_DEPENDENCY'); manager.authorize(smartVault, address(this), smartVault.setPriceOracle.selector); smartVault.setPriceOracle(params.priceOracle); manager.unauthorize(smartVault, address(this), smartVault.setPriceOracle.selector); } // Set strategies if any if (params.strategies.length > 0) { manager.authorize(smartVault, address(this), smartVault.setStrategy.selector); for (uint256 i = 0; i < params.strategies.length; i = i.uncheckedAdd(1)) { require(registry.isActive(STRATEGY_NAMESPACE, params.strategies[i]), 'BAD_STRATEGY_DEPENDENCY'); smartVault.setStrategy(params.strategies[i], true); } manager.unauthorize(smartVault, address(this), smartVault.setStrategy.selector); } // Set swap connector if given if (params.swapConnector != address(0)) { require(registry.isActive(SWAP_CONNECTOR_NAMESPACE, params.swapConnector), 'BAD_SWAP_CONNECTOR_DEPENDENCY'); manager.authorize(smartVault, address(this), smartVault.setSwapConnector.selector); smartVault.setSwapConnector(params.swapConnector); manager.unauthorize(smartVault, address(this), smartVault.setSwapConnector.selector); } // Set bridge connector if given if (params.bridgeConnector != address(0)) { bool isActive = registry.isActive(BRIDGE_CONNECTOR_NAMESPACE, params.bridgeConnector); require(isActive, 'BAD_BRIDGE_CONNECTOR_DEPENDENCY'); manager.authorize(smartVault, address(this), smartVault.setBridgeConnector.selector); smartVault.setBridgeConnector(params.bridgeConnector); manager.unauthorize(smartVault, address(this), smartVault.setBridgeConnector.selector); } // If no fee collector is given, make sure no fee amounts are requested too manager.authorize(smartVault, params.feeCollectorAdmin, smartVault.setFeeCollector.selector); if (params.feeCollector != address(0)) { manager.authorize(smartVault, address(this), smartVault.setFeeCollector.selector); smartVault.setFeeCollector(params.feeCollector); manager.unauthorize(smartVault, address(this), smartVault.setFeeCollector.selector); } else { bool noFees = params.withdrawFee.pct == 0 && params.swapFee.pct == 0 && params.bridgeFee.pct == 0 && params.performanceFee.pct == 0; require(noFees, 'SMART_VAULT_FEES_NO_COLLECTOR'); } // Set withdraw fee if not zero SmartVaultFeeParams memory withdrawFee = params.withdrawFee; if (withdrawFee.pct != 0) { manager.authorize(smartVault, address(this), smartVault.setWithdrawFee.selector); smartVault.setWithdrawFee(withdrawFee.pct, withdrawFee.cap, withdrawFee.token, withdrawFee.period); manager.unauthorize(smartVault, address(this), smartVault.setWithdrawFee.selector); } // Set swap fee if not zero SmartVaultFeeParams memory swapFee = params.swapFee; if (swapFee.pct != 0) { manager.authorize(smartVault, address(this), smartVault.setSwapFee.selector); smartVault.setSwapFee(swapFee.pct, swapFee.cap, swapFee.token, swapFee.period); manager.unauthorize(smartVault, address(this), smartVault.setSwapFee.selector); } // Set bridge fee if not zero SmartVaultFeeParams memory bridgeFee = params.bridgeFee; if (bridgeFee.pct != 0) { manager.authorize(smartVault, address(this), smartVault.setBridgeFee.selector); smartVault.setBridgeFee(bridgeFee.pct, bridgeFee.cap, bridgeFee.token, bridgeFee.period); manager.unauthorize(smartVault, address(this), smartVault.setBridgeFee.selector); } // Set performance fee if not zero SmartVaultFeeParams memory perfFee = params.performanceFee; if (perfFee.pct != 0) { manager.authorize(smartVault, address(this), smartVault.setPerformanceFee.selector); smartVault.setPerformanceFee(perfFee.pct, perfFee.cap, perfFee.token, perfFee.period); manager.unauthorize(smartVault, address(this), smartVault.setPerformanceFee.selector); } } /** * @dev Set up a base action * @param action Base action to be set up * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Base Action * @param smartVault Address of the Smart Vault to be set in the Base Action */ function setupBaseAction(BaseAction action, PermissionsManager manager, address admin, address smartVault) external { require(admin != address(0), 'BASE_ACTION_ADMIN_ZERO'); manager.authorize(action, Arrays.from(admin, address(this)), action.setSmartVault.selector); action.setSmartVault(smartVault); manager.unauthorize(action, address(this), action.setSmartVault.selector); } /** * @dev Set up a list of executors for a given action * @param action Action whose executors are being allowed * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param executors List of addresses to be allowed to call the given action * @param callSelector Selector of the function to allow the list of executors */ function setupActionExecutors( BaseAction action, PermissionsManager manager, address[] memory executors, bytes4 callSelector ) external { manager.authorize(action, executors, callSelector); } /** * @dev Set up a Relayed action * @param action Relayed action to be configured * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Relayed action * @param params Params to customize the Relayed action */ function setupRelayedAction( RelayedAction action, PermissionsManager manager, address admin, RelayedActionParams memory params ) external { // Authorize admin to set relayers and txs limits require(admin != address(0), 'RELAYED_ACTION_ADMIN_ZERO'); address[] memory whos = Arrays.from(admin, address(this)); bytes4[] memory whats = Arrays.from(action.setLimits.selector, action.setRelayer.selector); manager.authorize(action, whos, whats); action.setLimits(params.gasPriceLimit, params.txCostLimit); for (uint256 i = 0; i < params.relayers.length; i = i.uncheckedAdd(1)) { action.setRelayer(params.relayers[i], true); } manager.unauthorize(action, address(this), whats); } /** * @dev Set up a Token Threshold action * @param action Token threshold action to be configured * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Token Threshold action * @param params Params to customize the Token Threshold action */ function setupTokenThresholdAction( TokenThresholdAction action, PermissionsManager manager, address admin, TokenThresholdActionParams memory params ) external { require(admin != address(0), 'TOKEN_THRESHOLD_ADMIN_ZERO'); manager.authorize(action, Arrays.from(admin, address(this)), action.setThreshold.selector); action.setThreshold(params.token, params.amount); manager.unauthorize(action, address(this), action.setThreshold.selector); } /** * @dev Set up a Time-locked action * @param action Time-locked action to be configured * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Time-locked action * @param params Params to customize the Time-locked action */ function setupTimeLockedAction( TimeLockedAction action, PermissionsManager manager, address admin, TimeLockedActionParams memory params ) external { require(admin != address(0), 'TIME_LOCKED_ACTION_ADMIN_ZERO'); manager.authorize(action, Arrays.from(admin, address(this)), action.setTimeLock.selector); action.setTimeLock(params.period); manager.unauthorize(action, address(this), action.setTimeLock.selector); } /** * @dev Set up a Withdrawal action * @param action Relayed action to be configured * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Withdrawal action * @param params Params to customize the Withdrawal action */ function setupWithdrawalAction( WithdrawalAction action, PermissionsManager manager, address admin, WithdrawalActionParams memory params ) external { require(admin != address(0), 'WITHDRAWAL_ACTION_ADMIN_ZERO'); manager.authorize(action, Arrays.from(admin, address(this)), action.setRecipient.selector); action.setRecipient(params.recipient); manager.unauthorize(action, address(this), action.setRecipient.selector); } /** * @dev Set up a Receiver action * @param action Relayed action to be configured * @param manager Permissions manager that will control the entire Smart Vault and its actions * @param admin Address that will be granted with admin rights for the Receiver action */ function setupReceiverAction(ReceiverAction action, PermissionsManager manager, address admin) external { require(admin != address(0), 'RECEIVER_ACTION_ADMIN_ZERO'); manager.authorize(action, admin, action.transferToSmartVault.selector); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; /** * @title Arrays * @dev Helper methods to operate arrays */ library Arrays { using UncheckedMath for uint256; /** * @dev Builds an array of addresses based on the given ones */ function concat(address[] memory a, address[] memory b) internal pure returns (address[] memory r) { // No need for checked math since we are simply adding two memory array's length r = new address[](a.length.uncheckedAdd(b.length)); // No need for checked math since we are using it to compute indexes manually, always within boundaries for (uint256 i = 0; i < a.length; i = i.uncheckedAdd(1)) { r[i] = a[i]; } // No need for checked math since we are using it to compute indexes manually, always within boundaries for (uint256 i = 0; i < b.length; i = i.uncheckedAdd(1)) { r[a.length.uncheckedAdd(i)] = b[i]; } } /** * @dev Builds an array of addresses based on the given ones */ function from(address a, address[] memory b, address[] memory c) internal pure returns (address[] memory result) { // No need for checked math since we are simply adding two memory array's length result = new address[](b.length.uncheckedAdd(c.length).uncheckedAdd(1)); result[0] = a; // No need for checked math since we are using it to compute indexes manually, always within boundaries for (uint256 i = 0; i < b.length; i = i.uncheckedAdd(1)) { result[i.uncheckedAdd(1)] = b[i]; } // No need for checked math since we are using it to compute indexes manually, always within boundaries for (uint256 i = 0; i < c.length; i = i.uncheckedAdd(1)) { result[b.length.uncheckedAdd(1).uncheckedAdd(i)] = c[i]; } } // Address helpers function from(address a) internal pure returns (address[] memory r) { r = new address[](1); r[0] = a; } function from(address a, address b) internal pure returns (address[] memory r) { r = new address[](2); r[0] = a; r[1] = b; } function from(address a, address b, address c) internal pure returns (address[] memory r) { r = new address[](3); r[0] = a; r[1] = b; r[2] = c; } function from(address a, address b, address c, address d) internal pure returns (address[] memory r) { r = new address[](4); r[0] = a; r[1] = b; r[2] = c; r[3] = d; } function from(address a, address b, address c, address d, address e) internal pure returns (address[] memory r) { r = new address[](5); r[0] = a; r[1] = b; r[2] = c; r[3] = d; r[4] = e; } // Bytes4 helpers function from(bytes4 a) internal pure returns (bytes4[] memory r) { r = new bytes4[](1); r[0] = a; } function from(bytes4 a, bytes4 b) internal pure returns (bytes4[] memory r) { r = new bytes4[](2); r[0] = a; r[1] = b; } function from(bytes4 a, bytes4 b, bytes4 c) internal pure returns (bytes4[] memory r) { r = new bytes4[](3); r[0] = a; r[1] = b; r[2] = c; } function from(bytes4 a, bytes4 b, bytes4 c, bytes4 d) internal pure returns (bytes4[] memory r) { r = new bytes4[](4); r[0] = a; r[1] = b; r[2] = c; r[3] = d; } function from(bytes4 a, bytes4 b, bytes4 c, bytes4 d, bytes4 e) internal pure returns (bytes4[] memory r) { r = new bytes4[](5); r[0] = a; r[1] = b; r[2] = c; r[3] = d; r[4] = e; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; /** * @dev Permission * @param what Function selector to be referred * @param who Address to be referred */ struct Permission { bytes4 what; address who; } /** * @dev Permission change * @param grant Whether the permission should be granted (authorize) or revoked (unauthorize) * @param permissions Permission to be changed */ struct PermissionChange { bool grant; Permission permission; } /** * @dev Permission change request * @param target Address of the contract to be affected * @param changes List of permission changes to be performed */ struct PermissionChangeRequest { IAuthorizer target; PermissionChange[] changes; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import './Arrays.sol'; import './PermissionsManager.sol'; import { Permission, PermissionChange, PermissionChangeRequest } from './PermissionsData.sol'; library PermissionsHelpers { /** * @dev Builds a permission object * @param who Address to be referred * @param what Function selector to be referred */ function permission(address who, bytes4 what) internal pure returns (Permission memory) { return Permission(what, who); } /** * @dev Builds a permission change object * @param grant Whether the permission should be granted or revoked * @param who Address to be referred * @param what Function selector to be referred */ function change(bool grant, address who, bytes4 what) internal pure returns (PermissionChange memory) { return PermissionChange(grant, permission(who, what)); } /** * @dev Grants permission to `who` to perform `what` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be granted * @param who Address of the account that will be authorized * @param what Function selector to be authorized */ function authorize(PermissionsManager self, IAuthorizer where, address who, bytes4 what) internal { authorize(self, where, Arrays.from(who), Arrays.from(what)); } /** * @dev Revokes permission from `who` to perform `what` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be revoked * @param who Address of the account that will be unauthorized * @param what Function selector to be unauthorized */ function unauthorize(PermissionsManager self, IAuthorizer where, address who, bytes4 what) internal { unauthorize(self, where, Arrays.from(who), Arrays.from(what)); } /** * @dev Grants permission to `whos` to perform `what` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be granted * @param whos List of addresses of the accounts that will be authorized * @param what Function selector to be authorized */ function authorize(PermissionsManager self, IAuthorizer where, address[] memory whos, bytes4 what) internal { authorize(self, where, whos, Arrays.from(what)); } /** * @dev Revokes permission from `whos` to perform `what` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be revoked * @param whos List of addresses of the accounts that will be unauthorized * @param what Function selector to be unauthorized */ function unauthorize(PermissionsManager self, IAuthorizer where, address[] memory whos, bytes4 what) internal { unauthorize(self, where, whos, Arrays.from(what)); } /** * @dev Grants permissions to `who` to perform `whats` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be granted * @param who Address of the account that will be authorized * @param whats List of function selectors to be authorized */ function authorize(PermissionsManager self, IAuthorizer where, address who, bytes4[] memory whats) internal { authorize(self, where, Arrays.from(who), whats); } /** * @dev Revokes permissions from `who` to perform `whats` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be revoked * @param who Address of the account that will be unauthorized * @param whats List of function selectors to be unauthorized */ function unauthorize(PermissionsManager self, IAuthorizer where, address who, bytes4[] memory whats) internal { unauthorize(self, where, Arrays.from(who), whats); } /** * @dev Grants permissions to `whos` to perform `whats` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be granted * @param whos List of addresses of the accounts that will be authorized * @param whats List of function selectors to be authorized */ function authorize(PermissionsManager self, IAuthorizer where, address[] memory whos, bytes4[] memory whats) internal { execute(self, where, whos, whats, true); } /** * @dev Revokes permissions from `whos` to perform `whats` in `where` through the permissions manager `self` * @param self Permissions manager to be used * @param where Address of the contract where the permission will be revoked * @param whos List of addresses of the accounts that will be unauthorized * @param whats List of function selectors to be unauthorized */ function unauthorize(PermissionsManager self, IAuthorizer where, address[] memory whos, bytes4[] memory whats) internal { execute(self, where, whos, whats, false); } /** * @dev Executes a list of permission changes * @param self Permissions manager to be used * @param where Address of the contract where the permission change will be executed * @param whos List of addresses of the accounts that will be affected * @param whats List of function selectors to be affected * @param grant Whether the permissions should be granted or revoked */ function execute( PermissionsManager self, IAuthorizer where, address[] memory whos, bytes4[] memory whats, bool grant ) private { PermissionChangeRequest[] memory requests = new PermissionChangeRequest[](1); requests[0].target = where; requests[0].changes = new PermissionChange[](whos.length * whats.length); for (uint256 i = 0; i < whos.length; i++) { for (uint256 j = 0; j < whats.length; j++) { uint256 index = (i * whats.length) + j; requests[0].changes[index] = change(grant, whos[i], whats[j]); } } self.execute(requests); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import { Permission, PermissionChange, PermissionChangeRequest } from './PermissionsData.sol'; /** * @title PermissionsManager * @dev This implementation is meant to be used as a proxy in order to control many `IAuthorizer` implementations. * It allows to implement a layout of permissions over a group of `IAuthorizer` implementations, otherwise in order * to connect a big number of `IAuthorizer` implementations between each other, admins would had to perform many * transactions manually. */ contract PermissionsManager is Authorizer { /** * @dev Creates a new permission manager, allowing itself to authorize and unauthorize its own permissions * @param admin Address that will be allowed to execute permissions changes through the permissions manager */ constructor(address admin) { _authorize(admin, PermissionsManager.execute.selector); _authorize(admin, PermissionsManager.execute.selector); _authorize(address(this), Authorizer.authorize.selector); _authorize(address(this), Authorizer.unauthorize.selector); } /** * @dev Executes a list of permissions change requests. Sender must be authorized. * @param requests List of requests to be executed */ function execute(PermissionChangeRequest[] memory requests) external auth { for (uint256 i = 0; i < requests.length; i++) _execute(requests[i]); } /** * @dev Executes a single permissions change request * @param request Request to be executed */ function _execute(PermissionChangeRequest memory request) private { IAuthorizer target = request.target; for (uint256 i = 0; i < request.changes.length; i++) { PermissionChange memory change = request.changes[i]; (change.grant ? target.authorize : target.unauthorize)(change.permission.who, change.permission.what); } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IStrategy * @dev Strategy interface required by Mimic Smart Vaults. It must follow the IImplementation interface. */ interface IStrategy is IImplementation { /** * @dev Tokens accepted to join the strategy */ function joinTokens() external view returns (address[] memory); /** * @dev Tokens accepted to exit the strategy */ function exitTokens() external view returns (address[] memory); /** * @dev Tells how much a value unit means expressed in the asset token. * For example, if a strategy has a value of 100 in T0, and then it has a value of 120 in T1, * and the value rate is 1.5, it means the strategy has earned 30 strategy tokens between T0 and T1. */ function valueRate() external view returns (uint256); /** * @dev Tells the last value an account has over time. Note this value can be outdated: there could be rewards to * be claimed that will affect the accrued value. For example, if an account has a value of 100 in T0, and then it * has a value of 120 in T1, it means it gained a 20% between T0 and T1. * @param account Address of the account querying the last value of */ function lastValue(address account) external view returns (uint256); /** * @dev Claim any existing rewards * @param data Arbitrary extra data * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join the interfaced DeFi protocol * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage value to join with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join * @return value Value represented by the joined amount */ function join(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); /** * @dev Exit the interfaced DeFi protocol * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage value to exit with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit * @return value Value represented by the exited amount */ function exit(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISwapConnector * @dev Swap Connector interface to perform token swaps. It must follow the IImplementation interface. */ interface ISwapConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Uniswap V2, Uniswap V3, Balancer V2, Paraswap V5, 1inch V5, and Hop. */ enum Source { UniswapV2, UniswapV3, BalancerV2, ParaswapV5, OneInchV5, Hop } /** * @dev Swaps two tokens * @param source Source to execute the requested swap * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param minAmountOut Minimum amount of tokenOut willing to receive * @param data Encoded data to specify different swap parameters depending on the source picked */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external returns (uint256 amountOut); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/Address.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (security/Pausable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract Pausable is Context { /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); bool private _paused; /** * @dev Initializes the contract in unpaused state. */ constructor() { _paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { return _paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { require(!paused(), "Pausable: paused"); } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { require(paused(), "Pausable: not paused"); } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { _paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { _paused = false; emit Unpaused(_msgSender()); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`. // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`. // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a // good first aproximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1; uint256 x = a; if (x >> 128 > 0) { x >>= 128; result <<= 64; } if (x >> 64 > 0) { x >>= 64; result <<= 32; } if (x >> 32 > 0) { x >>= 32; result <<= 16; } if (x >> 16 > 0) { x >>= 16; result <<= 8; } if (x >> 8 > 0) { x >>= 8; result <<= 4; } if (x >> 4 > 0) { x >>= 4; result <<= 2; } if (x >> 2 > 0) { result <<= 1; } // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { uint256 result = sqrt(a); if (rounding == Rounding.Up && result * result < a) { result += 1; } return result; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/structs/EnumerableSet.sol) pragma solidity ^0.8.0; /** * @dev Library for managing * https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive * types. * * Sets have the following properties: * * - Elements are added, removed, and checked for existence in constant time * (O(1)). * - Elements are enumerated in O(n). No guarantees are made on the ordering. * * ``` * contract Example { * // Add the library methods * using EnumerableSet for EnumerableSet.AddressSet; * * // Declare a set state variable * EnumerableSet.AddressSet private mySet; * } * ``` * * As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`) * and `uint256` (`UintSet`) are supported. * * [WARNING] * ==== * Trying to delete such a structure from storage will likely result in data corruption, rendering the structure unusable. * See https://github.com/ethereum/solidity/pull/11843[ethereum/solidity#11843] for more info. * * In order to clean an EnumerableSet, you can either remove all elements one by one or create a fresh instance using an array of EnumerableSet. * ==== */ library EnumerableSet { // To implement this library for multiple types with as little code // repetition as possible, we write it in terms of a generic Set type with // bytes32 values. // The Set implementation uses private functions, and user-facing // implementations (such as AddressSet) are just wrappers around the // underlying Set. // This means that we can only create new EnumerableSets for types that fit // in bytes32. struct Set { // Storage of set values bytes32[] _values; // Position of the value in the `values` array, plus 1 because index 0 // means a value is not in the set. mapping(bytes32 => uint256) _indexes; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function _add(Set storage set, bytes32 value) private returns (bool) { if (!_contains(set, value)) { set._values.push(value); // The value is stored at length-1, but we add 1 to all indexes // and use 0 as a sentinel value set._indexes[value] = set._values.length; return true; } else { return false; } } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function _remove(Set storage set, bytes32 value) private returns (bool) { // We read and store the value's index to prevent multiple reads from the same storage slot uint256 valueIndex = set._indexes[value]; if (valueIndex != 0) { // Equivalent to contains(set, value) // To delete an element from the _values array in O(1), we swap the element to delete with the last one in // the array, and then remove the last element (sometimes called as 'swap and pop'). // This modifies the order of the array, as noted in {at}. uint256 toDeleteIndex = valueIndex - 1; uint256 lastIndex = set._values.length - 1; if (lastIndex != toDeleteIndex) { bytes32 lastValue = set._values[lastIndex]; // Move the last value to the index where the value to delete is set._values[toDeleteIndex] = lastValue; // Update the index for the moved value set._indexes[lastValue] = valueIndex; // Replace lastValue's index to valueIndex } // Delete the slot where the moved value was stored set._values.pop(); // Delete the index for the deleted slot delete set._indexes[value]; return true; } else { return false; } } /** * @dev Returns true if the value is in the set. O(1). */ function _contains(Set storage set, bytes32 value) private view returns (bool) { return set._indexes[value] != 0; } /** * @dev Returns the number of values on the set. O(1). */ function _length(Set storage set) private view returns (uint256) { return set._values.length; } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function _at(Set storage set, uint256 index) private view returns (bytes32) { return set._values[index]; } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function _values(Set storage set) private view returns (bytes32[] memory) { return set._values; } // Bytes32Set struct Bytes32Set { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _add(set._inner, value); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) { return _remove(set._inner, value); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) { return _contains(set._inner, value); } /** * @dev Returns the number of values in the set. O(1). */ function length(Bytes32Set storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) { return _at(set._inner, index); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(Bytes32Set storage set) internal view returns (bytes32[] memory) { return _values(set._inner); } // AddressSet struct AddressSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(AddressSet storage set, address value) internal returns (bool) { return _add(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(AddressSet storage set, address value) internal returns (bool) { return _remove(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(AddressSet storage set, address value) internal view returns (bool) { return _contains(set._inner, bytes32(uint256(uint160(value)))); } /** * @dev Returns the number of values in the set. O(1). */ function length(AddressSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(AddressSet storage set, uint256 index) internal view returns (address) { return address(uint160(uint256(_at(set._inner, index)))); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(AddressSet storage set) internal view returns (address[] memory) { bytes32[] memory store = _values(set._inner); address[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } // UintSet struct UintSet { Set _inner; } /** * @dev Add a value to a set. O(1). * * Returns true if the value was added to the set, that is if it was not * already present. */ function add(UintSet storage set, uint256 value) internal returns (bool) { return _add(set._inner, bytes32(value)); } /** * @dev Removes a value from a set. O(1). * * Returns true if the value was removed from the set, that is if it was * present. */ function remove(UintSet storage set, uint256 value) internal returns (bool) { return _remove(set._inner, bytes32(value)); } /** * @dev Returns true if the value is in the set. O(1). */ function contains(UintSet storage set, uint256 value) internal view returns (bool) { return _contains(set._inner, bytes32(value)); } /** * @dev Returns the number of values on the set. O(1). */ function length(UintSet storage set) internal view returns (uint256) { return _length(set._inner); } /** * @dev Returns the value stored at position `index` in the set. O(1). * * Note that there are no guarantees on the ordering of values inside the * array, and it may change when more values are added or removed. * * Requirements: * * - `index` must be strictly less than {length}. */ function at(UintSet storage set, uint256 index) internal view returns (uint256) { return uint256(_at(set._inner, index)); } /** * @dev Return the entire set in an array * * WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed * to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that * this function has an unbounded cost, and using it as part of a state-changing function may render the function * uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block. */ function values(UintSet storage set) internal view returns (uint256[] memory) { bytes32[] memory store = _values(set._inner); uint256[] memory result; /// @solidity memory-safe-assembly assembly { result := store } return result; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import { Ownable } from '@openzeppelin/contracts/access/Ownable.sol'; import { UncheckedMath } from '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import { IRegistry } from '@mimic-fi/v2-registry/contracts/registry/IRegistry.sol'; import { SmartVault } from '@mimic-fi/v2-smart-vault/contracts/SmartVault.sol'; import { Deployer } from '@mimic-fi/v2-smart-vaults-base/contracts/deploy/Deployer.sol'; import { Arrays } from '@mimic-fi/v2-smart-vaults-base/contracts/permissions/Arrays.sol'; import { PermissionsHelpers } from '@mimic-fi/v2-smart-vaults-base/contracts/permissions/PermissionsHelpers.sol'; import { PermissionsManager } from '@mimic-fi/v2-smart-vaults-base/contracts/permissions/PermissionsManager.sol'; import { Swapper } from './Swapper.sol'; contract SmartVaultDeployer is Ownable { using PermissionsHelpers for PermissionsManager; struct Params { address[] owners; IRegistry registry; PermissionsManager manager; SwapperActionParams swapperActionParams; Deployer.SmartVaultParams smartVaultParams; } struct SwapperActionParams { address impl; address admin; uint8[] sources; } constructor(address owner) { _transferOwnership(owner); } function deploy(Params memory params) external { SmartVault smartVault = Deployer.createSmartVault(params.registry, params.manager, params.smartVaultParams); _setupSwapperAction(smartVault, params.manager, params.swapperActionParams); Deployer.transferPermissionManagerControl(params.manager, params.owners); } function _setupSwapperAction(SmartVault smartVault, PermissionsManager manager, SwapperActionParams memory params) internal { // Create and setup action Swapper swapper = Swapper(params.impl); Deployer.setupBaseAction(swapper, manager, params.admin, address(smartVault)); // Set up allowed sources manager.authorize(swapper, Arrays.from(params.admin, address(this)), swapper.setSource.selector); for (uint256 i = 0; i < params.sources.length; i++) swapper.setSource(params.sources[i], true); manager.unauthorize(swapper, address(this), swapper.setSource.selector); // Set up pause permissions manager.authorize(swapper, params.admin, Arrays.from(swapper.pause.selector, swapper.unpause.selector)); // Authorize action to collect, swap, wrap, unwrap, and withdraw manager.authorize( smartVault, address(swapper), Arrays.from( smartVault.collect.selector, smartVault.swap.selector, smartVault.wrap.selector, smartVault.unwrap.selector, smartVault.withdraw.selector ) ); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import { Pausable } from '@openzeppelin/contracts/security/Pausable.sol'; import { IERC20 } from '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import { Address } from '@openzeppelin/contracts/utils/Address.sol'; import { EnumerableSet } from '@openzeppelin/contracts/utils/structs/EnumerableSet.sol'; import { Denominations } from '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import { ISmartVault } from '@mimic-fi/v2-smart-vault/contracts/ISmartVault.sol'; import { BaseAction } from '@mimic-fi/v2-smart-vaults-base/contracts/actions/BaseAction.sol'; /** * @title Swapper * @dev Public swapper action. This action allows any user to leverage a public smart vault to perform arbitray swaps. */ contract Swapper is BaseAction, Pausable { using Address for address payable; using EnumerableSet for EnumerableSet.UintSet; // Empty bytes array constant bytes private constant NO_DATA = new bytes(0); // Enumerable set of allowed sources EnumerableSet.UintSet private sources; /** * @dev Emitted every time a source is allowed or disallowed */ event SourceSet(uint256 indexed source, bool allowed); /** * @dev Creates a new swapper action * @param admin Address that will be granted with admin permissions * @param registry Address of the Mimic Registry */ constructor(address admin, address registry) BaseAction(admin, registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Tells the list of allowed sources */ function getAllowedSources() external view returns (uint256[] memory) { return sources.values(); } /** * @dev Tells whether a source is allowed or not * @param source Number identifying the source being queried */ function isSourceAllowed(uint256 source) public view returns (bool) { return sources.contains(source); } /** * @dev Change a source allowance. Sender must be authorized. * @param source Number identifying the source to be set * @param allowed Whether the source should be allowed or not * @return success True if the source was actually added or removed from the list of allowed sources */ function setSource(uint256 source, bool allowed) external auth returns (bool success) { require(source <= type(uint8).max, 'SWAPPER_INVALID_SOURCE_ID'); success = allowed ? sources.add(source) : sources.remove(source); if (success) emit SourceSet(source, allowed); } /** * @dev Pause the swap action. Sender must be authorized. */ function pause() external auth { _pause(); } /** * @dev Unpause the swap action. Sender must be authorized. */ function unpause() external auth { _unpause(); } /** * @dev Swaps two tokens * @param source Source where the swap will be executed. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param minAmountOut Minimum amount of tokenOut expected to be received * @param data Extra data that may enable or not different behaviors depending on the source picked */ function call( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external payable nonReentrant whenNotPaused { require(isSourceAllowed(source), 'SWAPPER_SOURCE_NOT_ALLOWED'); require(tokenIn != tokenOut, 'SWAPPER_SAME_TOKENS'); require(tokenIn != address(0), 'SWAPPER_TOKEN_IN_ZERO'); require(tokenOut != address(0), 'SWAPPER_TOKEN_OUT_ZERO'); require(amountIn > 0, 'SWAPPER_AMOUNT_IN_ZERO'); require(minAmountOut > 0, 'SWAPPER_MIN_AMOUNT_OUT_ZERO'); // Final swap amount in is either the wrapped amount in case token in is the native token, // or the amount collected by the smart vault in case it is another ERC20 token uint256 swapAmountIn; if (Denominations.isNativeToken(tokenIn)) { require(msg.value == amountIn, 'SWAPPER_UNEXPECTED_VALUE'); payable(address(smartVault)).sendValue(amountIn); swapAmountIn = smartVault.wrap(amountIn, NO_DATA); } else { require(msg.value == 0, 'SWAPPER_VALUE_GT_ZERO'); require(IERC20(tokenIn).allowance(msg.sender, address(smartVault)) >= amountIn, 'SWAPPER_BAD_ALLOWANCE'); swapAmountIn = smartVault.collect(tokenIn, msg.sender, amountIn, NO_DATA); } // Note that the swap should only be executed if this is not actually a wrap/unwrap only action // In that case, the action is already covered by the wrap (above) or unwrap (below) uint256 amountOut; address swapTokenIn = _wrappedIfNative(tokenIn); address swapTokenOut = _wrappedIfNative(tokenOut); if (swapTokenIn == swapTokenOut) { amountOut = swapAmountIn; require(amountOut >= minAmountOut, 'SWAPPER_WRAP_MIN_AMOUNT_OUT'); } else { amountOut = smartVault.swap( source, swapTokenIn, swapTokenOut, swapAmountIn, ISmartVault.SwapLimit.MinAmountOut, minAmountOut, data ); } // Finally unwrap if necessary and withdraw token out as requested to the sender uint256 toWithdraw = Denominations.isNativeToken(tokenOut) ? smartVault.unwrap(amountOut, NO_DATA) : amountOut; smartVault.withdraw(tokenOut, toWithdraw, msg.sender, NO_DATA); emit Executed(); } }
File 2 of 6: KishuInu
/** *Submitted for verification at Etherscan.io on 2021-04-17 */ // SPDX-License-Identifier: Unlicensed pragma solidity ^0.6.12; abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } } interface IERC20 { /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `sender` to `recipient` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom(address sender, address recipient, uint256 amount) external returns (bool); /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); } library SafeMath { /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { return sub(a, b, "SafeMath: subtraction overflow"); } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { return div(a, b, "SafeMath: division by zero"); } /** * @dev Returns the integer division of two unsigned integers. Reverts with custom message on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { return mod(a, b, "SafeMath: modulo by zero"); } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts with custom message when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b != 0, errorMessage); return a % b; } } library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== */ function isContract(address account) internal view returns (bool) { // According to EIP-1052, 0x0 is the value returned for not-yet created accounts // and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned // for accounts without code, i.e. `keccak256('')` bytes32 codehash; bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470; // solhint-disable-next-line no-inline-assembly assembly { codehash := extcodehash(account) } return (codehash != accountHash && codehash != 0x0); } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (bool success, ) = recipient.call{ value: amount }(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain`call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) { return _functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); return _functionCallWithValue(target, data, value, errorMessage); } function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) { require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: weiValue }(data); if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () internal { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(_owner == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = address(0); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } } contract KishuInu is Context, IERC20, Ownable { using SafeMath for uint256; using Address for address; mapping (address => uint256) private _rOwned; mapping (address => uint256) private _tOwned; mapping (address => mapping (address => uint256)) private _allowances; mapping (address => bool) private _isExcluded; address[] private _excluded; uint256 private constant MAX = ~uint256(0); uint256 private constant _tTotal = 100000000000 * 10**6 * 10**9; uint256 private _rTotal = (MAX - (MAX % _tTotal)); uint256 private _tFeeTotal; string private _name = 'Kishu Inu'; string private _symbol = 'KISHU'; uint8 private _decimals = 9; uint256 public _maxTxAmount = 100000000 * 10**6 * 10**9; constructor () public { _rOwned[_msgSender()] = _rTotal; emit Transfer(address(0), _msgSender(), _tTotal); } function name() public view returns (string memory) { return _name; } function symbol() public view returns (string memory) { return _symbol; } function decimals() public view returns (uint8) { return _decimals; } function totalSupply() public view override returns (uint256) { return _tTotal; } function balanceOf(address account) public view override returns (uint256) { if (_isExcluded[account]) return _tOwned[account]; return tokenFromReflection(_rOwned[account]); } function transfer(address recipient, uint256 amount) public override returns (bool) { _transfer(_msgSender(), recipient, amount); return true; } function allowance(address owner, address spender) public view override returns (uint256) { return _allowances[owner][spender]; } function approve(address spender, uint256 amount) public override returns (bool) { _approve(_msgSender(), spender, amount); return true; } function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) { _transfer(sender, recipient, amount); _approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance")); return true; } function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue)); return true; } function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { _approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero")); return true; } function isExcluded(address account) public view returns (bool) { return _isExcluded[account]; } function totalFees() public view returns (uint256) { return _tFeeTotal; } function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() { _maxTxAmount = _tTotal.mul(maxTxPercent).div( 10**2 ); } function reflect(uint256 tAmount) public { address sender = _msgSender(); require(!_isExcluded[sender], "Excluded addresses cannot call this function"); (uint256 rAmount,,,,) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rTotal = _rTotal.sub(rAmount); _tFeeTotal = _tFeeTotal.add(tAmount); } function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) { require(tAmount <= _tTotal, "Amount must be less than supply"); if (!deductTransferFee) { (uint256 rAmount,,,,) = _getValues(tAmount); return rAmount; } else { (,uint256 rTransferAmount,,,) = _getValues(tAmount); return rTransferAmount; } } function tokenFromReflection(uint256 rAmount) public view returns(uint256) { require(rAmount <= _rTotal, "Amount must be less than total reflections"); uint256 currentRate = _getRate(); return rAmount.div(currentRate); } function excludeAccount(address account) external onlyOwner() { require(!_isExcluded[account], "Account is already excluded"); if(_rOwned[account] > 0) { _tOwned[account] = tokenFromReflection(_rOwned[account]); } _isExcluded[account] = true; _excluded.push(account); } function includeAccount(address account) external onlyOwner() { require(_isExcluded[account], "Account is already excluded"); for (uint256 i = 0; i < _excluded.length; i++) { if (_excluded[i] == account) { _excluded[i] = _excluded[_excluded.length - 1]; _tOwned[account] = 0; _isExcluded[account] = false; _excluded.pop(); break; } } } function _approve(address owner, address spender, uint256 amount) private { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } function _transfer(address sender, address recipient, uint256 amount) private { require(sender != address(0), "ERC20: transfer from the zero address"); require(recipient != address(0), "ERC20: transfer to the zero address"); require(amount > 0, "Transfer amount must be greater than zero"); if(sender != owner() && recipient != owner()) require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount."); if (_isExcluded[sender] && !_isExcluded[recipient]) { _transferFromExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && _isExcluded[recipient]) { _transferToExcluded(sender, recipient, amount); } else if (!_isExcluded[sender] && !_isExcluded[recipient]) { _transferStandard(sender, recipient, amount); } else if (_isExcluded[sender] && _isExcluded[recipient]) { _transferBothExcluded(sender, recipient, amount); } else { _transferStandard(sender, recipient, amount); } } function _transferStandard(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferToExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private { (uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount); _tOwned[sender] = _tOwned[sender].sub(tAmount); _rOwned[sender] = _rOwned[sender].sub(rAmount); _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount); _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount); _reflectFee(rFee, tFee); emit Transfer(sender, recipient, tTransferAmount); } function _reflectFee(uint256 rFee, uint256 tFee) private { _rTotal = _rTotal.sub(rFee); _tFeeTotal = _tFeeTotal.add(tFee); } function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) { (uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount); uint256 currentRate = _getRate(); (uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate); return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee); } function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) { uint256 tFee = tAmount.div(100).mul(2); uint256 tTransferAmount = tAmount.sub(tFee); return (tTransferAmount, tFee); } function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) { uint256 rAmount = tAmount.mul(currentRate); uint256 rFee = tFee.mul(currentRate); uint256 rTransferAmount = rAmount.sub(rFee); return (rAmount, rTransferAmount, rFee); } function _getRate() private view returns(uint256) { (uint256 rSupply, uint256 tSupply) = _getCurrentSupply(); return rSupply.div(tSupply); } function _getCurrentSupply() private view returns(uint256, uint256) { uint256 rSupply = _rTotal; uint256 tSupply = _tTotal; for (uint256 i = 0; i < _excluded.length; i++) { if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal); rSupply = rSupply.sub(_rOwned[_excluded[i]]); tSupply = tSupply.sub(_tOwned[_excluded[i]]); } if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal); return (rSupply, tSupply); } }
File 3 of 6: SmartVault
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IBridgeConnector * @dev Bridge Connector interface to bridge tokens between different chains. It must follow IImplementation interface. */ interface IBridgeConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Hop only for now. */ enum Source { Hop } /** * @dev Bridge assets to a different chain * @param source Source to execute the requested bridge op * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amountIn Amount of tokens to be bridged * @param minAmountOut Minimum amount of tokens willing to receive on the destination chain * @param recipient Address that will receive the tokens on the destination chain * @param data ABI encoded data that will depend on the requested source */ function bridge( uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import './IAuthorizer.sol'; /** * @title Authorizer * @dev Authorization module to be used by contracts that need to implement permissions for their methods. * It provides a permissions model to list who is allowed to call what function in a contract. And only accounts * authorized to manage those permissions are the ones that are allowed to authorize or unauthorize accounts. */ contract Authorizer is IAuthorizer { // Constant used to denote that a permission is open to anyone address public constant ANY_ADDRESS = address(0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF); // Internal mapping to tell who is allowed to do what indexed by (account, function selector) mapping (address => mapping (bytes4 => bool)) private authorized; /** * @dev Modifier that should be used to tag protected functions */ modifier auth() { _authenticate(msg.sender, msg.sig); _; } /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) public view override returns (bool) { return authorized[ANY_ADDRESS][what] || authorized[who][what]; } /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external override auth { _authorize(who, what); } /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external override auth { _unauthorize(who, what); } /** * @dev Internal function to authenticate someone over a function. * It reverts if the given account is not authorized to call the requested function. * @param who Address to be authenticated * @param what Function selector to be authenticated */ function _authenticate(address who, bytes4 what) internal view { require(isAuthorized(who, what), 'AUTH_SENDER_NOT_ALLOWED'); } /** * @dev Internal function to authorize someone to call a function * @param who Address to be authorized * @param what Function selector to be granted */ function _authorize(address who, bytes4 what) internal { authorized[who][what] = true; emit Authorized(who, what); } /** * @dev Internal function to unauthorize someone to call a function * @param who Address to be unauthorized * @param what Function selector to be revoked */ function _unauthorize(address who, bytes4 what) internal { authorized[who][what] = false; emit Unauthorized(who, what); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IAuthorizer */ interface IAuthorizer { /** * @dev Emitted when an account is authorized to call a function */ event Authorized(address indexed who, bytes4 what); /** * @dev Emitted when an account is unauthorized to call a function */ event Unauthorized(address indexed who, bytes4 what); /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external; /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external; /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) external view returns (bool); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title FixedPoint * @dev Math library to operate with fixed point values with 18 decimals */ library FixedPoint { // 1 in fixed point value: 18 decimal places uint256 internal constant ONE = 1e18; /** * @dev Multiplies two fixed point numbers rounding down */ function mulDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product / ONE; } } /** * @dev Multiplies two fixed point numbers rounding up */ function mulUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product == 0 ? 0 : (((product - 1) / ONE) + 1); } } /** * @dev Divides two fixed point numbers rounding down */ function divDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return aInflated / b; } } /** * @dev Divides two fixed point numbers rounding up */ function divUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return ((aInflated - 1) / b) + 1; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title UncheckedMath * @dev Math library to perform unchecked operations */ library UncheckedMath { /** * @dev Unsafely adds two unsigned integers */ function uncheckedAdd(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a + b; } } /** * @dev Unsafely subtracts two unsigned integers */ function uncheckedSub(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a - b; } } /** * @dev Unsafely multiplies two unsigned integers */ function uncheckedMul(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a * b; } } /** * @dev Unsafely multiplies two signed integers */ function uncheckedMul(int256 a, int256 b) internal pure returns (int256) { unchecked { return a * b; } } /** * @dev Unsafely divides two unsigned integers */ function uncheckedDiv(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a / b; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title Denominations * @dev Provides a list of ground denominations for those tokens that cannot be represented by an ERC20. * For now, the only needed is the native token that could be ETH, MATIC, or other depending on the layer being operated. */ library Denominations { address internal constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; function isNativeToken(address token) internal pure returns (bool) { return token == NATIVE_TOKEN; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /** * @title IWrappedNativeToken */ interface IWrappedNativeToken is IERC20 { /** * @dev Wraps msg.value into the wrapped-native token */ function deposit() external payable; /** * @dev Unwraps requested amount to the native token */ function withdraw(uint256 amount) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ interface IPriceFeedProvider { /** * @dev Emitted every time a price feed is set for (base, quote) pair */ event PriceFeedSet(address indexed base, address indexed quote, address feed); /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view returns (address); /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) external; /** * @dev Sets a list of price feeds * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import './IPriceFeedProvider.sol'; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ contract PriceFeedProvider is IPriceFeedProvider { using UncheckedMath for uint256; // Mapping of price feeds from "token A" to "token B" mapping (address => mapping (address => address)) private _priceFeeds; /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view override returns (address) { return _priceFeeds[base][quote]; } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public virtual override { _priceFeeds[base][quote] = feed; emit PriceFeedSet(base, quote, feed); } /** * @dev Sets a list of price feeds. Sender must be authorized. * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) public virtual override { require(bases.length == quotes.length, 'SET_FEEDS_INVALID_QUOTES_LENGTH'); require(bases.length == feeds.length, 'SET_FEEDS_INVALID_FEEDS_LENGTH'); for (uint256 i = 0; i < bases.length; i = i.uncheckedAdd(1)) setPriceFeed(bases[i], quotes[i], feeds[i]); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IPriceOracle * @dev Oracle that interfaces with external feeds to provide quotes for tokens based on any other token. * It must support also `IImplementation`. */ interface IPriceOracle is IImplementation { /** * @dev Tells the price of a token (base) in a given quote. The response is expressed using the corresponding * number of decimals so that when performing a fixed point product of it by a `base` amount it results in * a value expressed in `quote` decimals. For example, if `base` is ETH and `quote` is USDC, then the returned * value is expected to be expressed using 6 decimals: * * FixedPoint.mul(X[ETH], price[USDC/ETH]) = FixedPoint.mul(X[18], price[6]) = X * price [6] * * @param provider Contract providing the price feeds to use by the oracle * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address provider, address base, address quote) external view returns (uint256); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './IImplementation.sol'; import '../registry/IRegistry.sol'; /** * @title BaseImplementation * @dev This implementation contract comes with an immutable reference to an implementations registry where it should * be registered as well (checked during initialization). It allows requesting new instances of other registered * implementations to as another safety check to make sure valid instances are referenced in case it's needed. */ abstract contract BaseImplementation is IImplementation { // Immutable implementations registry reference address public immutable override registry; /** * @dev Creates a new BaseImplementation * @param _registry Address of the Mimic Registry where dependencies will be validated against */ constructor(address _registry) { registry = _registry; } /** * @dev Internal function to validate a new dependency that must be registered as stateless. * It checks the new dependency is registered, not deprecated, and stateless. * @param dependency New stateless dependency to be set */ function _validateStatelessDependency(address dependency) internal view { require(_validateDependency(dependency), 'DEPENDENCY_NOT_STATELESS'); } /** * @dev Internal function to validate a new dependency that cannot be registered as stateless. * It checks the new dependency is registered, not deprecated, and not stateful. * @param dependency New stateful dependency to be set */ function _validateStatefulDependency(address dependency) internal view { require(!_validateDependency(dependency), 'DEPENDENCY_NOT_STATEFUL'); } /** * @dev Internal function to validate a new dependency. It checks the dependency is registered and not deprecated. * @param dependency New dependency to be set * @return Whether the dependency is stateless or not */ function _validateDependency(address dependency) private view returns (bool) { (bool stateless, bool deprecated, bytes32 namespace) = IRegistry(registry).implementationData(dependency); require(namespace != bytes32(0), 'DEPENDENCY_NOT_REGISTERED'); require(!deprecated, 'DEPENDENCY_DEPRECATED'); return stateless; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; // solhint-disable func-name-mixedcase /** * @title IImplementation * @dev Implementation interface that must be followed for implementations to be registered in the Mimic Registry */ interface IImplementation { /** * @dev Tells the namespace under which the implementation is registered in the Mimic Registry */ function NAMESPACE() external view returns (bytes32); /** * @dev Tells the address of the Mimic Registry */ function registry() external view returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import './InitializableImplementation.sol'; /** * @title InitializableAuthorizedImplementation * @dev InitializableImplementation using the Authorizer mixin. Initializable implementations that want to use the * Authorizer permissions mechanism should inherit from this contract instead. */ abstract contract InitializableAuthorizedImplementation is InitializableImplementation, Authorizer { /** * @dev Creates a new InitializableAuthorizedImplementation * @param registry Address of the Mimic Registry */ constructor(address registry) InitializableImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Initialization function that authorizes an admin account to authorize and unauthorize accounts. * Note this function can only be called from a function marked with the `initializer` modifier. * @param admin Address to be granted authorize and unauthorize permissions */ function _initialize(address admin) internal onlyInitializing { _initialize(); _authorize(admin, Authorizer.authorize.selector); _authorize(admin, Authorizer.unauthorize.selector); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './BaseImplementation.sol'; /** * @title InitializableImplementation * @dev Implementation contract to be used through proxies. Inheriting contracts are meant to be initialized through * initialization functions instead of constructor functions. It allows re-using the same logic contract while making * deployments cheaper. */ abstract contract InitializableImplementation is BaseImplementation, Initializable { /** * @dev Creates a new BaseImplementation. Note that initializers are disabled at creation time. */ constructor(address registry) BaseImplementation(registry) { _disableInitializers(); } /** * @dev Initialization function. * Note this function can only be called from a function marked with the `initializer` modifier. */ function _initialize() internal view onlyInitializing { // solhint-disable-previous-line no-empty-blocks } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; /** * @title IRegistry * @dev Registry interface, it must follow the IAuthorizer interface. */ interface IRegistry is IAuthorizer { /** * @dev Emitted every time a new implementation is registered */ event Registered(bytes32 indexed namespace, address indexed implementation, bool stateless); /** * @dev Emitted every time an implementation is deprecated */ event Deprecated(bytes32 indexed namespace, address indexed implementation); /** * @dev Tells the data of an implementation: * @param implementation Address of the implementation to request it's data */ function implementationData(address implementation) external view returns (bool stateless, bool deprecated, bytes32 namespace); /** * @dev Tells if a specific implementation is registered under a certain namespace and it's not deprecated * @param namespace Namespace asking for * @param implementation Address of the implementation to be checked */ function isActive(bytes32 namespace, address implementation) external view returns (bool); /** * @dev Registers a new implementation for a given namespace * @param namespace Namespace to be used for the implementation * @param implementation Address of the implementation to be registered * @param stateless Whether the implementation is stateless or not */ function register(bytes32 namespace, address implementation, bool stateless) external; /** * @dev Deprecates a registered implementation * @param implementation Address of the implementation to be deprecated */ function deprecate(address implementation) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IStrategy * @dev Strategy interface required by Mimic Smart Vaults. It must follow the IImplementation interface. */ interface IStrategy is IImplementation { /** * @dev Tokens accepted to join the strategy */ function joinTokens() external view returns (address[] memory); /** * @dev Tokens accepted to exit the strategy */ function exitTokens() external view returns (address[] memory); /** * @dev Tells how much a value unit means expressed in the asset token. * For example, if a strategy has a value of 100 in T0, and then it has a value of 120 in T1, * and the value rate is 1.5, it means the strategy has earned 30 strategy tokens between T0 and T1. */ function valueRate() external view returns (uint256); /** * @dev Tells the last value an account has over time. Note this value can be outdated: there could be rewards to * be claimed that will affect the accrued value. For example, if an account has a value of 100 in T0, and then it * has a value of 120 in T1, it means it gained a 20% between T0 and T1. * @param account Address of the account querying the last value of */ function lastValue(address account) external view returns (uint256); /** * @dev Claim any existing rewards * @param data Arbitrary extra data * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join the interfaced DeFi protocol * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage value to join with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join * @return value Value represented by the joined amount */ function join(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); /** * @dev Exit the interfaced DeFi protocol * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage value to exit with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit * @return value Value represented by the exited amount */ function exit(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISwapConnector * @dev Swap Connector interface to perform token swaps. It must follow the IImplementation interface. */ interface ISwapConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Uniswap V2, Uniswap V3, Balancer V2, Paraswap V5, 1inch V5, and Hop. */ enum Source { UniswapV2, UniswapV3, BalancerV2, ParaswapV5, OneInchV5, Hop } /** * @dev Swaps two tokens * @param source Source to execute the requested swap * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param minAmountOut Minimum amount of tokenOut willing to receive * @param data Encoded data to specify different swap parameters depending on the source picked */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external returns (uint256 amountOut); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/Clones.sol) pragma solidity ^0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. * * _Available since v3.4._ */ library Clones { /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create opcode, which should never revert. */ function clone(address implementation) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create(0, ptr, 0x37) } require(instance != address(0), "ERC1167: create failed"); } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `implementation` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create2(0, ptr, 0x37, salt) } require(instance != address(0), "ERC1167: create2 failed"); } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt, address deployer ) internal pure returns (address predicted) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000) mstore(add(ptr, 0x38), shl(0x60, deployer)) mstore(add(ptr, 0x4c), salt) mstore(add(ptr, 0x6c), keccak256(ptr, 0x37)) predicted := keccak256(add(ptr, 0x37), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress(address implementation, bytes32 salt) internal view returns (address predicted) { return predictDeterministicAddress(implementation, salt, address(this)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/Address.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`. // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`. // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a // good first aproximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1; uint256 x = a; if (x >> 128 > 0) { x >>= 128; result <<= 64; } if (x >> 64 > 0) { x >>= 64; result <<= 32; } if (x >> 32 > 0) { x >>= 32; result <<= 16; } if (x >> 16 > 0) { x >>= 16; result <<= 8; } if (x >> 8 > 0) { x >>= 8; result <<= 4; } if (x >> 4 > 0) { x >>= 4; result <<= 2; } if (x >> 2 > 0) { result <<= 1; } // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { uint256 result = sqrt(a); if (rounding == Rounding.Up && result * result < a) { result += 1; } return result; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; /** * @title BridgeConnectorLib * @dev Library used to delegate-call bridge ops and decode return data correctly */ library BridgeConnectorLib { /** * @dev Delegate-calls a bridge to the bridge connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function bridge( address connector, uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) internal { bytes memory bridgeData = abi.encodeWithSelector( IBridgeConnector.bridge.selector, source, chainId, token, amountIn, minAmountOut, recipient, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(bridgeData); Address.verifyCallResult(success, returndata, 'BRIDGE_CALL_REVERTED'); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; /** * @title StrategyLib * @dev Library used to delegate-call to strategy and decode return data correctly */ library StrategyLib { /** * @dev Delegate-calls a claim to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function claim(address strategy, bytes memory data) internal returns (address[] memory, uint256[] memory) { bytes memory claimData = abi.encodeWithSelector(IStrategy.claim.selector, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(claimData); Address.verifyCallResult(success, returndata, 'CLAIM_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[])); } /** * @dev Delegate-calls a join to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory joinData = abi.encodeWithSelector(IStrategy.join.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(joinData); Address.verifyCallResult(success, returndata, 'JOIN_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } /** * @dev Delegate-calls a exit to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory exitData = abi.encodeWithSelector(IStrategy.exit.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(exitData); Address.verifyCallResult(success, returndata, 'EXIT_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; /** * @title SwapConnectorLib * @dev Library used to delegate-call swaps and decode return data correctly */ library SwapConnectorLib { /** * @dev Delegate-calls a swap to the swap connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function swap( address connector, uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) internal returns (uint256 amountOut) { bytes memory swapData = abi.encodeWithSelector( ISwapConnector.swap.selector, source, tokenIn, tokenOut, amountIn, minAmountOut, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(swapData); Address.verifyCallResult(success, returndata, 'SWAP_CALL_REVERTED'); return abi.decode(returndata, (uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/IPriceFeedProvider.sol'; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVault * @dev Mimic Smart Vault interface to manage assets. It must support also `IImplementation` and `IAuthorizer` */ interface ISmartVault is IPriceFeedProvider, IImplementation, IAuthorizer { enum SwapLimit { Slippage, MinAmountOut } enum BridgeLimit { Slippage, MinAmountOut } /** * @dev Emitted every time a new strategy is set for the Smart Vault */ event StrategySet(address indexed strategy, bool allowed); /** * @dev Emitted every time a new price oracle is set for the Smart Vault */ event PriceOracleSet(address indexed priceOracle); /** * @dev Emitted every time a new swap connector is set for the Smart Vault */ event SwapConnectorSet(address indexed swapConnector); /** * @dev Emitted every time a new bridge connector is set for the Smart Vault */ event BridgeConnectorSet(address indexed bridgeConnector); /** * @dev Emitted every time a new fee collector is set */ event FeeCollectorSet(address indexed feeCollector); /** * @dev Emitted every time the withdraw fee percentage is set */ event WithdrawFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the performance fee percentage is set */ event PerformanceFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the swap fee percentage is set */ event SwapFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the bridge fee percentage is set */ event BridgeFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time `call` is called */ event Call(address indexed target, bytes callData, uint256 value, bytes result, bytes data); /** * @dev Emitted every time `collect` is called */ event Collect(address indexed token, address indexed from, uint256 collected, bytes data); /** * @dev Emitted every time `withdraw` is called */ event Withdraw(address indexed token, address indexed recipient, uint256 withdrawn, uint256 fee, bytes data); /** * @dev Emitted every time `wrap` is called */ event Wrap(uint256 amount, uint256 wrapped, bytes data); /** * @dev Emitted every time `unwrap` is called */ event Unwrap(uint256 amount, uint256 unwrapped, bytes data); /** * @dev Emitted every time `claim` is called */ event Claim(address indexed strategy, address[] tokens, uint256[] amounts, bytes data); /** * @dev Emitted every time `join` is called */ event Join( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256 slippage, bytes data ); /** * @dev Emitted every time `exit` is called */ event Exit( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256[] fees, uint256 slippage, bytes data ); /** * @dev Emitted every time `swap` is called */ event Swap( uint8 indexed source, address indexed tokenIn, address indexed tokenOut, uint256 amountIn, uint256 amountOut, uint256 minAmountOut, uint256 fee, bytes data ); /** * @dev Emitted every time `bridge` is called */ event Bridge( uint8 indexed source, uint256 indexed chainId, address indexed token, uint256 amountIn, uint256 minAmountOut, uint256 fee, address recipient, bytes data ); /** * @dev Tells a strategy is allowed or not * @param strategy Address of the strategy being queried */ function isStrategyAllowed(address strategy) external view returns (bool); /** * @dev Tells the invested value for a strategy * @param strategy Address of the strategy querying the invested value of */ function investedValue(address strategy) external view returns (uint256); /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) external view returns (uint256); /** * @dev Tells the price oracle associated to a Smart Vault */ function priceOracle() external view returns (address); /** * @dev Tells the swap connector associated to a Smart Vault */ function swapConnector() external view returns (address); /** * @dev Tells the bridge connector associated to a Smart Vault */ function bridgeConnector() external view returns (address); /** * @dev Tells the address where fees will be deposited */ function feeCollector() external view returns (address); /** * @dev Tells the withdraw fee configuration */ function withdrawFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the performance fee configuration */ function performanceFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the swap fee configuration */ function swapFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the bridge fee configuration */ function bridgeFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the address of the wrapped native token */ function wrappedNativeToken() external view returns (address); /** * @dev Sets a new strategy as allowed or not for a Smart Vault * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external; /** * @dev Sets a new price oracle to a Smart Vault * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external; /** * @dev Sets a new swap connector to a Smart Vault * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external; /** * @dev Sets a new bridge connector to a Smart Vault * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external; /** * @dev Sets a new fee collector * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external; /** * @dev Sets a new withdraw fee configuration * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new performance fee configuration * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new swap fee configuration * @param pct Swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new bridge fee configuration * @param pct Bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) external view returns (uint256); /** * @dev Execute an arbitrary call from a Smart Vault * @param target Address where the call will be sent * @param callData Calldata to be used for the call * @param value Value in wei that will be attached to the call * @param data Extra data that may enable or not different behaviors depending on the implementation * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external returns (bytes memory result); /** * @dev Collect tokens from a sender to a Smart Vault * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data that may enable or not different behaviors depending on the implementation * @return collected Amount of tokens assigned to the Smart Vault */ function collect(address token, address from, uint256 amount, bytes memory data) external returns (uint256 collected); /** * @dev Withdraw tokens to an external account * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data that may enable or not different behaviors depending on the implementation * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external returns (uint256 withdrawn); /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it * @param amount Amount of native tokens to be wrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external returns (uint256 wrapped); /** * @dev Unwrap an amount of wrapped native tokens * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external returns (uint256 unwrapped); /** * @dev Claim strategy rewards * @param strategy Address of the strategy to claim rewards * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join a strategy with an amount of tokens * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Exit a strategy * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Swaps two tokens * @param source Source to request the swap. It depends on the Swap Connector attached to a Smart Vault. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Extra data that may enable or not different behaviors depending on the implementation * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external returns (uint256 amountOut); /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Extra data that may enable or not different behaviors depending on the implementation * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external returns (uint256 bridged); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVaultsFactory * @dev Smart Vaults Factory interface, it must follow the IImplementation interface. */ interface ISmartVaultsFactory is IImplementation { /** * @dev Emitted every time a new Smart Vault instance is created */ event Created(address indexed implementation, address indexed instance, bytes initializeResult); /** * @dev Tells the implementation associated to a contract instance * @param instance Address of the instance to request it's implementation */ function implementationOf(address instance) external view returns (address); /** * @dev Creates a new Smart Vault pointing to a registered implementation * @param salt Salt bytes to derivate the address of the new instance * @param implementation Address of the implementation to be instanced * @param initializeData Arbitrary data to be sent after deployment * @return instance Address of the new instance created */ function create(bytes32 salt, address implementation, bytes memory initializeData) external returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@openzeppelin/contracts/utils/math/Math.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import '@mimic-fi/v2-helpers/contracts/utils/IWrappedNativeToken.sol'; import '@mimic-fi/v2-price-oracle/contracts/oracle/IPriceOracle.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/PriceFeedProvider.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/InitializableAuthorizedImplementation.sol'; import './ISmartVault.sol'; import './helpers/StrategyLib.sol'; import './helpers/SwapConnectorLib.sol'; import './helpers/BridgeConnectorLib.sol'; /** * @title Smart Vault * @dev Smart Vault contract where funds are being held offering a bunch of primitives to allow users model any * type of action to manage them, these are: collector, withdraw, swap, bridge, join, exit, bridge, wrap, and unwrap. * * It inherits from InitializableAuthorizedImplementation which means it's implementation can be cloned * from the Mimic Registry and should be initialized depending on each case. */ contract SmartVault is ISmartVault, PriceFeedProvider, InitializableAuthorizedImplementation { using SafeERC20 for IERC20; using FixedPoint for uint256; using UncheckedMath for uint256; using StrategyLib for address; using SwapConnectorLib for address; using BridgeConnectorLib for address; // Namespace under which the Smart Vault is registered in the Mimic Registry bytes32 public constant override NAMESPACE = keccak256('SMART_VAULT'); /** * @dev Fee configuration parameters * @param pct Percentage expressed using 16 decimals (1e18 = 100%) * @param cap Maximum amount of fees to be charged per period * @param token Address of the token to express the cap amount * @param period Period length in seconds * @param totalCharged Total amount of fees charged in the current period * @param nextResetTime Current cap period end date */ struct Fee { uint256 pct; uint256 cap; address token; uint256 period; uint256 totalCharged; uint256 nextResetTime; } // Price oracle reference address public override priceOracle; // Swap connector reference address public override swapConnector; // Bridge connector reference address public override bridgeConnector; // List of allowed strategies indexed by strategy address mapping (address => bool) public override isStrategyAllowed; // List of invested values indexed by strategy address mapping (address => uint256) public override investedValue; // Fee collector address where fees will be deposited address public override feeCollector; // Withdraw fee configuration Fee public override withdrawFee; // Performance fee configuration Fee public override performanceFee; // Swap fee configuration Fee public override swapFee; // Bridge fee configuration Fee public override bridgeFee; // Wrapped native token reference address public immutable override wrappedNativeToken; /** * @dev Creates a new Smart Vault implementation with references that should be shared among all implementations * @param _wrappedNativeToken Address of the wrapped native token to be used * @param _registry Address of the Mimic Registry to be referenced */ constructor(address _wrappedNativeToken, address _registry) InitializableAuthorizedImplementation(_registry) { wrappedNativeToken = _wrappedNativeToken; } /** * @dev Initializes the Smart Vault instance * @param admin Address that will be granted with admin rights */ function initialize(address admin) external initializer { _initialize(admin); } /** * @dev It allows receiving native token transfers */ receive() external payable { // solhint-disable-previous-line no-empty-blocks } /** * @dev Sets a new strategy as allowed or not for a Smart Vault. Sender must be authorized. * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external override auth { _setStrategy(strategy, allowed); } /** * @dev Sets a new price oracle to a Smart Vault. Sender must be authorized. * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external override auth { _setPriceOracle(newPriceOracle); } /** * @dev Sets a new swap connector to a Smart Vault. Sender must be authorized. * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external override auth { _setSwapConnector(newSwapConnector); } /** * @dev Sets a new bridge connector to a Smart Vault. Sender must be authorized. * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external override auth { _setBridgeConnector(newBridgeConnector); } /** * @dev Sets a new fee collector. Sender must be authorized. * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external override auth { _setFeeCollector(newFeeCollector); } /** * @dev Sets a new withdraw fee. Sender must be authorized. * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(withdrawFee, pct, cap, token, period); emit WithdrawFeeSet(pct, cap, token, period); } /** * @dev Sets a new performance fee. Sender must be authorized. * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(performanceFee, pct, cap, token, period); emit PerformanceFeeSet(pct, cap, token, period); } /** * @dev Sets a new swap fee. Sender must be authorized. * @param pct New swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(swapFee, pct, cap, token, period); emit SwapFeeSet(pct, cap, token, period); } /** * @dev Sets a new bridge fee. Sender must be authorized. * @param pct New bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(bridgeFee, pct, cap, token, period); emit BridgeFeeSet(pct, cap, token, period); } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public override(IPriceFeedProvider, PriceFeedProvider) auth { super.setPriceFeed(base, quote, feed); } /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) public view override returns (uint256) { return IPriceOracle(priceOracle).getPrice(address(this), base, quote); } /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) public view override returns (uint256) { return IStrategy(strategy).lastValue(address(this)); } /** * @dev Execute an arbitrary call from a Smart Vault. Sender must be authorized. * @param target Address where the call will be sent * @param data Calldata to be used for the call * @param value Value in wei that will be attached to the call * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external override auth returns (bytes memory result) { result = Address.functionCallWithValue(target, callData, value, 'SMART_VAULT_ARBITRARY_CALL_FAIL'); emit Call(target, callData, value, result, data); } /** * @dev Collect tokens from an external account to a Smart Vault. Sender must be authorized. * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data only logged * @return collected Amount of tokens collected */ function collect(address token, address from, uint256 amount, bytes memory data) external override auth returns (uint256 collected) { require(amount > 0, 'COLLECT_AMOUNT_ZERO'); uint256 previousBalance = IERC20(token).balanceOf(address(this)); IERC20(token).safeTransferFrom(from, address(this), amount); uint256 currentBalance = IERC20(token).balanceOf(address(this)); collected = currentBalance - previousBalance; emit Collect(token, from, collected, data); } /** * @dev Withdraw tokens to an external account. Sender must be authorized. * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data only logged * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external override auth returns (uint256 withdrawn) { require(amount > 0, 'WITHDRAW_AMOUNT_ZERO'); require(recipient != address(0), 'RECIPIENT_ZERO'); uint256 withdrawFeeAmount = recipient == feeCollector ? 0 : _payFee(token, amount, withdrawFee); withdrawn = amount - withdrawFeeAmount; _safeTransfer(token, recipient, withdrawn); emit Withdraw(token, recipient, withdrawn, withdrawFeeAmount, data); } /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it. Sender must be authorized. * @param amount Amount of native tokens to be wrapped * @param data Extra data only logged * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external override auth returns (uint256 wrapped) { require(amount > 0, 'WRAP_AMOUNT_ZERO'); require(address(this).balance >= amount, 'WRAP_INSUFFICIENT_AMOUNT'); IWrappedNativeToken wrappedToken = IWrappedNativeToken(wrappedNativeToken); uint256 previousBalance = wrappedToken.balanceOf(address(this)); wrappedToken.deposit{ value: amount }(); uint256 currentBalance = wrappedToken.balanceOf(address(this)); wrapped = currentBalance - previousBalance; emit Wrap(amount, wrapped, data); } /** * @dev Unwrap an amount of wrapped native tokens. Sender must be authorized. * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data only logged * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external override auth returns (uint256 unwrapped) { require(amount > 0, 'UNWRAP_AMOUNT_ZERO'); uint256 previousBalance = address(this).balance; IWrappedNativeToken(wrappedNativeToken).withdraw(amount); uint256 currentBalance = address(this).balance; unwrapped = currentBalance - previousBalance; emit Unwrap(amount, unwrapped, data); } /** * @dev Claim strategy rewards. Sender must be authorized. * @param strategy Address of the strategy to claim rewards * @param data Extra data passed to the strategy and logged * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external override auth returns (address[] memory tokens, uint256[] memory amounts) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); (tokens, amounts) = strategy.claim(data); emit Claim(strategy, tokens, amounts, data); } /** * @dev Join a strategy with an amount of tokens. Sender must be authorized. * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(slippage <= FixedPoint.ONE, 'JOIN_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'JOIN_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.join(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'JOIN_OUTPUT_INVALID_LENGTH'); investedValue[strategy] = investedValue[strategy] + value; emit Join(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, slippage, data); } /** * @dev Exit a strategy. Sender must be authorized. * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(investedValue[strategy] > 0, 'EXIT_NO_INVESTED_VALUE'); require(slippage <= FixedPoint.ONE, 'EXIT_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'EXIT_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.exit(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'EXIT_OUTPUT_INVALID_LENGTH'); uint256[] memory performanceFeeAmounts = new uint256[](amountsOut.length); // It can rely on the last updated value since we have just exited, no need to compute current value uint256 valueBeforeExit = lastValue(strategy) + value; if (valueBeforeExit <= investedValue[strategy]) { // There were losses, invested value is simply reduced using the exited ratio compared to the value // before exit. Invested value is round up to avoid interpreting losses due to rounding errors investedValue[strategy] -= investedValue[strategy].mulUp(value).divUp(valueBeforeExit); } else { // If value gains are greater than the exit value, it means only gains are being withdrawn. In that case // the taxable amount is the entire exited amount, otherwise it should be the equivalent gains ratio of it. uint256 valueGains = valueBeforeExit.uncheckedSub(investedValue[strategy]); bool onlyGains = valueGains >= value; // If the exit value is greater than the value gains, the invested value should be reduced by the portion // of the invested value being exited. Otherwise, it's still the same, only gains are being withdrawn. // No need for checked math as we are checking it manually beforehand uint256 decrement = onlyGains ? 0 : value.uncheckedSub(valueGains); investedValue[strategy] = investedValue[strategy] - decrement; // Compute performance fees per token out for (uint256 i = 0; i < tokensOut.length; i = i.uncheckedAdd(1)) { address token = tokensOut[i]; uint256 amount = amountsOut[i]; uint256 taxableAmount = onlyGains ? amount : ((amount * valueGains) / value); uint256 feeAmount = _payFee(token, taxableAmount, performanceFee); amountsOut[i] = amount - feeAmount; performanceFeeAmounts[i] = feeAmount; } } emit Exit(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, performanceFeeAmounts, slippage, data); } /** * @dev Swaps two tokens. Sender must be authorized. * @param source Source to request the swap: Uniswap V2, Uniswap V3, Balancer V2, or Paraswap V5. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Encoded data to specify different swap parameters depending on the source picked * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external override auth returns (uint256 amountOut) { require(tokenIn != tokenOut, 'SWAP_SAME_TOKEN'); require(swapConnector != address(0), 'SWAP_CONNECTOR_NOT_SET'); uint256 minAmountOut; if (limitType == SwapLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == SwapLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'SWAP_SLIPPAGE_ABOVE_ONE'); uint256 price = getPrice(tokenIn, tokenOut); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = amountIn.mulUp(price).mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('SWAP_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(tokenIn).balanceOf(address(this)); uint256 preBalanceOut = IERC20(tokenOut).balanceOf(address(this)); swapConnector.swap(source, tokenIn, tokenOut, amountIn, minAmountOut, data); uint256 postBalanceIn = IERC20(tokenIn).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - amountIn, 'SWAP_BAD_TOKEN_IN_BALANCE'); uint256 amountOutBeforeFees = IERC20(tokenOut).balanceOf(address(this)) - preBalanceOut; require(amountOutBeforeFees >= minAmountOut, 'SWAP_MIN_AMOUNT'); uint256 swapFeeAmount = _payFee(tokenOut, amountOutBeforeFees, swapFee); amountOut = amountOutBeforeFees - swapFeeAmount; emit Swap(source, tokenIn, tokenOut, amountIn, amountOut, minAmountOut, swapFeeAmount, data); } /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Bridge limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Encoded data to specify different bridge parameters depending on the source picked * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external override auth returns (uint256 bridged) { require(block.chainid != chainId, 'BRIDGE_SAME_CHAIN'); require(recipient != address(0), 'BRIDGE_RECIPIENT_ZERO'); require(bridgeConnector != address(0), 'BRIDGE_CONNECTOR_NOT_SET'); uint256 bridgeFeeAmount = _payFee(token, amount, bridgeFee); bridged = amount - bridgeFeeAmount; uint256 minAmountOut; if (limitType == BridgeLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == BridgeLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'BRIDGE_SLIPPAGE_ABOVE_ONE'); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = bridged.mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('BRIDGE_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(token).balanceOf(address(this)); bridgeConnector.bridge(source, chainId, token, bridged, minAmountOut, recipient, data); uint256 postBalanceIn = IERC20(token).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - bridged, 'BRIDGE_BAD_TOKEN_IN_BALANCE'); emit Bridge(source, chainId, token, bridged, minAmountOut, bridgeFeeAmount, recipient, data); } /** * @dev Internal function to pay the amount of fees to be charged based on a fee configuration to the fee collector * @param token Token being charged * @param amount Token amount to be taxed with fees * @param fee Fee configuration to be applied * @return paidAmount Amount of fees paid to the fee collector */ function _payFee(address token, uint256 amount, Fee storage fee) internal returns (uint256 paidAmount) { // Fee amounts are always rounded down uint256 feeAmount = amount.mulDown(fee.pct); // If cap amount or cap period are not set, charge the entire amount if (fee.token == address(0) || fee.cap == 0 || fee.period == 0) { _safeTransfer(token, feeCollector, feeAmount); return feeAmount; } // Reset cap totalizator if necessary if (block.timestamp >= fee.nextResetTime) { fee.totalCharged = 0; fee.nextResetTime = block.timestamp + fee.period; } // Calc fee amount in the fee token used for the cap uint256 feeTokenPrice = getPrice(token, fee.token); uint256 feeAmountInFeeToken = feeAmount.mulDown(feeTokenPrice); // Compute fee amount picking the minimum between the chargeable amount and the remaining part for the cap if (fee.totalCharged + feeAmountInFeeToken <= fee.cap) { paidAmount = feeAmount; fee.totalCharged += feeAmountInFeeToken; } else if (fee.totalCharged < fee.cap) { paidAmount = (fee.cap.uncheckedSub(fee.totalCharged) * feeAmount) / feeAmountInFeeToken; fee.totalCharged = fee.cap; } else { // This case is when the total charged amount is already greater than the cap amount. It could happen if // the cap amounts is decreased or if the cap token is changed. In this case the total charged amount is // not updated, and the amount to paid is zero. paidAmount = 0; } // Pay fee amount to the fee collector _safeTransfer(token, feeCollector, paidAmount); } /** * @dev Internal method to transfer ERC20 or native tokens from a Smart Vault * @param token Address of the ERC20 token to transfer * @param to Address transferring the tokens to * @param amount Amount of tokens to transfer */ function _safeTransfer(address token, address to, uint256 amount) internal { if (amount == 0) return; if (Denominations.isNativeToken(token)) Address.sendValue(payable(to), amount); else IERC20(token).safeTransfer(to, amount); } /** * @dev Sets a new strategy as allowed or not * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function _setStrategy(address strategy, bool allowed) internal { if (allowed) _validateStatelessDependency(strategy); isStrategyAllowed[strategy] = allowed; emit StrategySet(strategy, allowed); } /** * @dev Sets a new price oracle * @param newPriceOracle New price oracle to be set */ function _setPriceOracle(address newPriceOracle) internal { _validateStatelessDependency(newPriceOracle); priceOracle = newPriceOracle; emit PriceOracleSet(newPriceOracle); } /** * @dev Sets a new swap connector * @param newSwapConnector New swap connector to be set */ function _setSwapConnector(address newSwapConnector) internal { _validateStatelessDependency(newSwapConnector); swapConnector = newSwapConnector; emit SwapConnectorSet(newSwapConnector); } /** * @dev Sets a new bridge connector * @param newBridgeConnector New bridge connector to be set */ function _setBridgeConnector(address newBridgeConnector) internal { _validateStatelessDependency(newBridgeConnector); bridgeConnector = newBridgeConnector; emit BridgeConnectorSet(newBridgeConnector); } /** * @dev Internal method to set the fee collector * @param newFeeCollector New fee collector to be set */ function _setFeeCollector(address newFeeCollector) internal { require(newFeeCollector != address(0), 'FEE_COLLECTOR_ZERO'); feeCollector = newFeeCollector; emit FeeCollectorSet(newFeeCollector); } /** * @dev Internal method to set a new fee cap configuration * @param fee Fee configuration to be updated * @param pct Fee percentage to be set * @param cap New maximum amount of fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds */ function _setFeeConfiguration(Fee storage fee, uint256 pct, uint256 cap, address token, uint256 period) internal { require(pct <= FixedPoint.ONE, 'FEE_PCT_ABOVE_ONE'); // If there is no fee percentage, there must not be a fee cap bool isZeroCap = token == address(0) && cap == 0 && period == 0; require(pct != 0 || isZeroCap, 'INVALID_CAP_WITH_FEE_ZERO'); // If there is a cap, all values must be non-zero bool isNonZeroCap = token != address(0) && cap != 0 && period != 0; require(isZeroCap || isNonZeroCap, 'INCONSISTENT_CAP_VALUES'); // Changing the fee percentage does not affect the totalizator at all, it only affects future fee charges fee.pct = pct; // Changing the fee cap amount does not affect the totalizator, it only applies when changing the for the total // charged amount. Note that it can happen that the cap amount is lower than the total charged amount if the // cap amount is lowered. However, there shouldn't be any accounting issues with that. fee.cap = cap; // Changing the cap period only affects the end time of the next period, but not the end date of the current one fee.period = period; // Therefore, only clean the totalizators if the cap is being removed if (isZeroCap) { fee.totalCharged = 0; fee.nextResetTime = 0; } else { // If cap values are not zero, set the next reset time if it wasn't set already // Otherwise, if the cap token is being changed the total charged amount must be updated accordingly if (fee.nextResetTime == 0) { fee.nextResetTime = block.timestamp + period; } else if (fee.token != token) { uint256 newTokenPrice = getPrice(fee.token, token); fee.totalCharged = fee.totalCharged.mulDown(newTokenPrice); } } // Finally simply set the new requested token fee.token = token; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/Clones.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import '@mimic-fi/v2-registry/contracts/registry/IRegistry.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import './ISmartVaultsFactory.sol'; /** * @title SmartVaultsFactory * @dev */ contract SmartVaultsFactory is ISmartVaultsFactory, BaseImplementation { using Address for address; // Smart Vaults Factory namespace bytes32 public constant override NAMESPACE = keccak256('SMART_VAULTS_FACTORY'); // Namespace to use by this deployer to fetch ISmartVault implementations from the Mimic Registry bytes32 private constant SMART_VAULT_NAMESPACE = keccak256('SMART_VAULT'); // List of instances' implementations indexed by instance address mapping (address => address) public override implementationOf; /** * @dev Creates a new Smart Vaults Factory implementation * @param registry Address of the Mimic Registry to be referenced */ constructor(address registry) BaseImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Creates a new Smart Vault pointing to a registered implementation using CREATE2 * @param salt Salt bytes to derivate the address of the new instance * @param implementation Address of the implementation to be instanced. It must be registered and not deprecated. * @param initializeData Arbitrary data to be sent after deployment. It can be used to initialize the new instance. * @return instance Address of the new instance created */ function create(bytes32 salt, address implementation, bytes memory initializeData) external override returns (address instance) { require(implementation != address(0), 'IMPLEMENTATION_ADDRESS_ZERO'); require(IImplementation(implementation).NAMESPACE() == SMART_VAULT_NAMESPACE, 'BAD_IMPLEMENTATION_NAMESPACE'); require(IRegistry(registry).isActive(SMART_VAULT_NAMESPACE, implementation), 'BAD_SMART_VAULT_IMPLEMENTATION'); bytes32 senderSalt = keccak256(abi.encodePacked(msg.sender, salt)); instance = Clones.cloneDeterministic(address(implementation), senderSalt); implementationOf[instance] = implementation; bytes memory result = initializeData.length == 0 ? new bytes(0) : instance.functionCall(initializeData, 'SMART_VAULT_INIT_FAILED'); emit Created(implementation, instance, result); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/BridgeMock.sol'; contract BridgeConnectorMock is IBridgeConnector, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('BRIDGE_CONNECTOR'); BridgeMock public immutable bridgeMock; constructor(address registry) BaseImplementation(registry) { bridgeMock = new BridgeMock(); } function bridge( uint8, /* source */ uint256, /* chainId */ address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) external override { IERC20(token).approve(address(bridgeMock), amountIn); return bridgeMock.bridge(token, amountIn, minAmountOut, recipient, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-price-oracle/contracts/oracle/IPriceOracle.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; contract PriceOracleMock is IPriceOracle, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('PRICE_ORACLE'); struct Feed { bool set; uint256 rate; } mapping (address => mapping (address => Feed)) public mockedFeeds; constructor(address registry) BaseImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } function mockRate(address base, address quote, uint256 newMockedRate) external { Feed storage feed = mockedFeeds[base][quote]; feed.set = true; feed.rate = newMockedRate; } function getPrice(address, address base, address quote) external view override returns (uint256) { if (base == quote) return FixedPoint.ONE; Feed storage feed = mockedFeeds[base][quote]; require(feed.set, 'PRICE_ORACLE_FEED_NOT_SET'); return feed.rate; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/TokenMock.sol'; contract StrategyMock is IStrategy, BaseImplementation { using FixedPoint for uint256; bytes32 public constant override NAMESPACE = keccak256('STRATEGY'); address public immutable lpt; address public immutable token; address public immutable rewardToken; event Claimed(bytes data); event Joined(address[] tokensIn, uint256[] amountsIn, uint256 slippage, bytes data); event Exited(address[] tokensIn, uint256[] amountsIn, uint256 slippage, bytes data); constructor(address registry) BaseImplementation(registry) { lpt = address(new TokenMock('LPT')); token = address(new TokenMock('TKN')); rewardToken = address(new TokenMock('REW')); } function mockGains(address account, uint256 multiplier) external { uint256 balance = IERC20(lpt).balanceOf(account); TokenMock(lpt).mint(account, balance * (multiplier - 1)); } function mockLosses(address account, uint256 divisor) external { uint256 balance = IERC20(lpt).balanceOf(account); TokenMock(lpt).burn(account, balance / divisor); } function joinTokens() public view override returns (address[] memory tokens) { tokens = new address[](1); tokens[0] = token; } function exitTokens() public view override returns (address[] memory tokens) { tokens = new address[](1); tokens[0] = lpt; } function valueRate() public pure override returns (uint256) { return FixedPoint.ONE; } function lastValue(address account) public view override returns (uint256) { return IERC20(lpt).balanceOf(account); } function claim(bytes memory data) external override returns (address[] memory tokens, uint256[] memory amounts) { uint256 amount = abi.decode(data, (uint256)); TokenMock(rewardToken).mint(address(this), amount); tokens = new address[](1); tokens[0] = rewardToken; amounts = new uint256[](1); amounts[0] = amount; emit Claimed(data); } function join(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external override returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { require(tokensIn.length == 1, 'STRATEGY_INVALID_TOKENS_IN_LEN'); require(amountsIn.length == 1, 'STRATEGY_INVALID_AMOUNTS_IN_LEN'); require(tokensIn[0] == token, 'STRATEGY_INVALID_JOIN_TOKEN'); tokensOut = exitTokens(); amountsOut = new uint256[](1); amountsOut[0] = amountsIn[0]; TokenMock(token).burn(address(this), amountsIn[0]); TokenMock(lpt).mint(address(this), amountsOut[0]); value = amountsOut[0].mulDown(valueRate()); emit Joined(tokensIn, amountsIn, slippage, data); } function exit(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external override returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { require(tokensIn.length == 1, 'STRATEGY_INVALID_TOKENS_IN_LEN'); require(amountsIn.length == 1, 'STRATEGY_INVALID_AMOUNTS_IN_LEN'); require(tokensIn[0] == lpt, 'STRATEGY_INVALID_EXIT_TOKEN'); tokensOut = joinTokens(); amountsOut = new uint256[](1); amountsOut[0] = amountsIn[0]; TokenMock(lpt).burn(address(this), amountsIn[0]); TokenMock(token).mint(address(this), amountsOut[0]); value = amountsIn[0].divUp(valueRate()); emit Exited(tokensIn, amountsIn, slippage, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/DexMock.sol'; contract SwapConnectorMock is ISwapConnector, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('SWAP_CONNECTOR'); DexMock public immutable dex; constructor(address registry) BaseImplementation(registry) { dex = new DexMock(); } function mockRate(uint256 newRate) external { dex.mockRate(newRate); } function swap( uint8, /* source */ address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external override returns (uint256 amountOut) { IERC20(tokenIn).approve(address(dex), amountIn); return dex.swap(tokenIn, tokenOut, amountIn, minAmountOut, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; contract BridgeMock { function bridge(address token, uint256 amount, uint256, address, bytes memory) external { IERC20(token).transferFrom(msg.sender, address(this), amount); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; contract DexMock { using FixedPoint for uint256; uint256 public mockedRate; constructor() { mockedRate = FixedPoint.ONE; } function mockRate(uint256 newRate) external { mockedRate = newRate; } function swap(address tokenIn, address tokenOut, uint256 amountIn, uint256, bytes memory) external returns (uint256 amountOut) { IERC20(tokenIn).transferFrom(msg.sender, address(this), amountIn); amountOut = amountIn.mulDown(mockedRate); IERC20(tokenOut).transfer(msg.sender, amountOut); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; contract TokenMock is ERC20 { constructor(string memory symbol) ERC20(symbol, symbol) { // solhint-disable-previous-line no-empty-blocks } function mint(address account, uint256 amount) external { _mint(account, amount); } function burn(address account, uint256 amount) external { _burn(account, amount); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/utils/IWrappedNativeToken.sol'; contract WrappedNativeTokenMock is IWrappedNativeToken { uint8 public decimals = 18; string public name = 'Wrapped Native Token'; string public symbol = 'WNT'; event Deposit(address indexed to, uint256 amount); event Withdrawal(address indexed from, uint256 amount); mapping (address => uint256) public override balanceOf; mapping (address => mapping (address => uint256)) public override allowance; receive() external payable { deposit(); } function deposit() public payable override { balanceOf[msg.sender] += msg.value; emit Deposit(msg.sender, msg.value); } function withdraw(uint256 amount) public override { require(balanceOf[msg.sender] >= amount, 'WNT_NOT_ENOUGH_BALANCE'); balanceOf[msg.sender] -= amount; payable(msg.sender).transfer(amount); emit Withdrawal(msg.sender, amount); } function totalSupply() public view override returns (uint256) { return address(this).balance; } function approve(address spender, uint256 amount) public override returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public override returns (bool) { return transferFrom(msg.sender, to, amount); } function transferFrom(address from, address to, uint256 amount) public override returns (bool) { require(balanceOf[from] >= amount, 'NOT_ENOUGH_BALANCE'); if (from != msg.sender && allowance[from][msg.sender] != type(uint256).max) { require(allowance[from][msg.sender] >= amount, 'NOT_ENOUGH_ALLOWANCE'); allowance[from][msg.sender] -= amount; } balanceOf[from] -= amount; balanceOf[to] += amount; emit Transfer(from, to, amount); return true; } }
File 4 of 6: SmartVault
// SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IBridgeConnector * @dev Bridge Connector interface to bridge tokens between different chains. It must follow IImplementation interface. */ interface IBridgeConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Hop only for now. */ enum Source { Hop } /** * @dev Bridge assets to a different chain * @param source Source to execute the requested bridge op * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amountIn Amount of tokens to be bridged * @param minAmountOut Minimum amount of tokens willing to receive on the destination chain * @param recipient Address that will receive the tokens on the destination chain * @param data ABI encoded data that will depend on the requested source */ function bridge( uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import './IAuthorizer.sol'; /** * @title Authorizer * @dev Authorization module to be used by contracts that need to implement permissions for their methods. * It provides a permissions model to list who is allowed to call what function in a contract. And only accounts * authorized to manage those permissions are the ones that are allowed to authorize or unauthorize accounts. */ contract Authorizer is IAuthorizer { // Constant used to denote that a permission is open to anyone address public constant ANY_ADDRESS = address(0xFFfFfFffFFfffFFfFFfFFFFFffFFFffffFfFFFfF); // Internal mapping to tell who is allowed to do what indexed by (account, function selector) mapping (address => mapping (bytes4 => bool)) private authorized; /** * @dev Modifier that should be used to tag protected functions */ modifier auth() { _authenticate(msg.sender, msg.sig); _; } /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) public view override returns (bool) { return authorized[ANY_ADDRESS][what] || authorized[who][what]; } /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external override auth { _authorize(who, what); } /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external override auth { _unauthorize(who, what); } /** * @dev Internal function to authenticate someone over a function. * It reverts if the given account is not authorized to call the requested function. * @param who Address to be authenticated * @param what Function selector to be authenticated */ function _authenticate(address who, bytes4 what) internal view { require(isAuthorized(who, what), 'AUTH_SENDER_NOT_ALLOWED'); } /** * @dev Internal function to authorize someone to call a function * @param who Address to be authorized * @param what Function selector to be granted */ function _authorize(address who, bytes4 what) internal { authorized[who][what] = true; emit Authorized(who, what); } /** * @dev Internal function to unauthorize someone to call a function * @param who Address to be unauthorized * @param what Function selector to be revoked */ function _unauthorize(address who, bytes4 what) internal { authorized[who][what] = false; emit Unauthorized(who, what); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IAuthorizer */ interface IAuthorizer { /** * @dev Emitted when an account is authorized to call a function */ event Authorized(address indexed who, bytes4 what); /** * @dev Emitted when an account is unauthorized to call a function */ event Unauthorized(address indexed who, bytes4 what); /** * @dev Authorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be authorized * @param what Function selector to be granted */ function authorize(address who, bytes4 what) external; /** * @dev Unauthorizes someone to call a function. Sender must be authorize to do so. * @param who Address to be unauthorized * @param what Function selector to be revoked */ function unauthorize(address who, bytes4 what) external; /** * @dev Tells whether someone is allowed to call a function or not. It returns true if it's allowed to anyone. * @param who Address asking permission for * @param what Function selector asking permission for */ function isAuthorized(address who, bytes4 what) external view returns (bool); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title FixedPoint * @dev Math library to operate with fixed point values with 18 decimals */ library FixedPoint { // 1 in fixed point value: 18 decimal places uint256 internal constant ONE = 1e18; /** * @dev Multiplies two fixed point numbers rounding down */ function mulDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product / ONE; } } /** * @dev Multiplies two fixed point numbers rounding up */ function mulUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { uint256 product = a * b; require(a == 0 || product / a == b, 'MUL_OVERFLOW'); return product == 0 ? 0 : (((product - 1) / ONE) + 1); } } /** * @dev Divides two fixed point numbers rounding down */ function divDown(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return aInflated / b; } } /** * @dev Divides two fixed point numbers rounding up */ function divUp(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { require(b != 0, 'ZERO_DIVISION'); if (a == 0) return 0; uint256 aInflated = a * ONE; require(aInflated / a == ONE, 'DIV_INTERNAL'); return ((aInflated - 1) / b) + 1; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title UncheckedMath * @dev Math library to perform unchecked operations */ library UncheckedMath { /** * @dev Unsafely adds two unsigned integers */ function uncheckedAdd(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a + b; } } /** * @dev Unsafely subtracts two unsigned integers */ function uncheckedSub(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a - b; } } /** * @dev Unsafely multiplies two unsigned integers */ function uncheckedMul(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a * b; } } /** * @dev Unsafely multiplies two signed integers */ function uncheckedMul(int256 a, int256 b) internal pure returns (int256) { unchecked { return a * b; } } /** * @dev Unsafely divides two unsigned integers */ function uncheckedDiv(uint256 a, uint256 b) internal pure returns (uint256) { unchecked { return a / b; } } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; /** * @title Denominations * @dev Provides a list of ground denominations for those tokens that cannot be represented by an ERC20. * For now, the only needed is the native token that could be ETH, MATIC, or other depending on the layer being operated. */ library Denominations { address internal constant NATIVE_TOKEN = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; function isNativeToken(address token) internal pure returns (bool) { return token == NATIVE_TOKEN; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; /** * @title IWrappedNativeToken */ interface IWrappedNativeToken is IERC20 { /** * @dev Wraps msg.value into the wrapped-native token */ function deposit() external payable; /** * @dev Unwraps requested amount to the native token */ function withdraw(uint256 amount) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ interface IPriceFeedProvider { /** * @dev Emitted every time a price feed is set for (base, quote) pair */ event PriceFeedSet(address indexed base, address indexed quote, address feed); /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view returns (address); /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) external; /** * @dev Sets a list of price feeds * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import './IPriceFeedProvider.sol'; /** * @title IPriceFeedProvider * @dev Contract providing price feed references for (base, quote) token pairs */ contract PriceFeedProvider is IPriceFeedProvider { using UncheckedMath for uint256; // Mapping of price feeds from "token A" to "token B" mapping (address => mapping (address => address)) private _priceFeeds; /** * @dev Tells the price feed address for (base, quote) pair. It returns the zero address if there is no one set. * @param base Token to be rated * @param quote Token used for the price rate */ function getPriceFeed(address base, address quote) external view override returns (address) { return _priceFeeds[base][quote]; } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public virtual override { _priceFeeds[base][quote] = feed; emit PriceFeedSet(base, quote, feed); } /** * @dev Sets a list of price feeds. Sender must be authorized. * @param bases List of token bases to be set * @param quotes List of token quotes to be set * @param feeds List of price feeds to be set */ function setPriceFeeds(address[] memory bases, address[] memory quotes, address[] memory feeds) public virtual override { require(bases.length == quotes.length, 'SET_FEEDS_INVALID_QUOTES_LENGTH'); require(bases.length == feeds.length, 'SET_FEEDS_INVALID_FEEDS_LENGTH'); for (uint256 i = 0; i < bases.length; i = i.uncheckedAdd(1)) setPriceFeed(bases[i], quotes[i], feeds[i]); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IPriceOracle * @dev Oracle that interfaces with external feeds to provide quotes for tokens based on any other token. * It must support also `IImplementation`. */ interface IPriceOracle is IImplementation { /** * @dev Tells the price of a token (base) in a given quote. The response is expressed using the corresponding * number of decimals so that when performing a fixed point product of it by a `base` amount it results in * a value expressed in `quote` decimals. For example, if `base` is ETH and `quote` is USDC, then the returned * value is expected to be expressed using 6 decimals: * * FixedPoint.mul(X[ETH], price[USDC/ETH]) = FixedPoint.mul(X[18], price[6]) = X * price [6] * * @param provider Contract providing the price feeds to use by the oracle * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address provider, address base, address quote) external view returns (uint256); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './IImplementation.sol'; import '../registry/IRegistry.sol'; /** * @title BaseImplementation * @dev This implementation contract comes with an immutable reference to an implementations registry where it should * be registered as well (checked during initialization). It allows requesting new instances of other registered * implementations to as another safety check to make sure valid instances are referenced in case it's needed. */ abstract contract BaseImplementation is IImplementation { // Immutable implementations registry reference address public immutable override registry; /** * @dev Creates a new BaseImplementation * @param _registry Address of the Mimic Registry where dependencies will be validated against */ constructor(address _registry) { registry = _registry; } /** * @dev Internal function to validate a new dependency that must be registered as stateless. * It checks the new dependency is registered, not deprecated, and stateless. * @param dependency New stateless dependency to be set */ function _validateStatelessDependency(address dependency) internal view { require(_validateDependency(dependency), 'DEPENDENCY_NOT_STATELESS'); } /** * @dev Internal function to validate a new dependency that cannot be registered as stateless. * It checks the new dependency is registered, not deprecated, and not stateful. * @param dependency New stateful dependency to be set */ function _validateStatefulDependency(address dependency) internal view { require(!_validateDependency(dependency), 'DEPENDENCY_NOT_STATEFUL'); } /** * @dev Internal function to validate a new dependency. It checks the dependency is registered and not deprecated. * @param dependency New dependency to be set * @return Whether the dependency is stateless or not */ function _validateDependency(address dependency) private view returns (bool) { (bool stateless, bool deprecated, bytes32 namespace) = IRegistry(registry).implementationData(dependency); require(namespace != bytes32(0), 'DEPENDENCY_NOT_REGISTERED'); require(!deprecated, 'DEPENDENCY_DEPRECATED'); return stateless; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; // solhint-disable func-name-mixedcase /** * @title IImplementation * @dev Implementation interface that must be followed for implementations to be registered in the Mimic Registry */ interface IImplementation { /** * @dev Tells the namespace under which the implementation is registered in the Mimic Registry */ function NAMESPACE() external view returns (bytes32); /** * @dev Tells the address of the Mimic Registry */ function registry() external view returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import './InitializableImplementation.sol'; /** * @title InitializableAuthorizedImplementation * @dev InitializableImplementation using the Authorizer mixin. Initializable implementations that want to use the * Authorizer permissions mechanism should inherit from this contract instead. */ abstract contract InitializableAuthorizedImplementation is InitializableImplementation, Authorizer { /** * @dev Creates a new InitializableAuthorizedImplementation * @param registry Address of the Mimic Registry */ constructor(address registry) InitializableImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Initialization function that authorizes an admin account to authorize and unauthorize accounts. * Note this function can only be called from a function marked with the `initializer` modifier. * @param admin Address to be granted authorize and unauthorize permissions */ function _initialize(address admin) internal onlyInitializing { _initialize(); _authorize(admin, Authorizer.authorize.selector); _authorize(admin, Authorizer.unauthorize.selector); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/utils/Initializable.sol'; import './BaseImplementation.sol'; /** * @title InitializableImplementation * @dev Implementation contract to be used through proxies. Inheriting contracts are meant to be initialized through * initialization functions instead of constructor functions. It allows re-using the same logic contract while making * deployments cheaper. */ abstract contract InitializableImplementation is BaseImplementation, Initializable { /** * @dev Creates a new BaseImplementation. Note that initializers are disabled at creation time. */ constructor(address registry) BaseImplementation(registry) { _disableInitializers(); } /** * @dev Initialization function. * Note this function can only be called from a function marked with the `initializer` modifier. */ function _initialize() internal view onlyInitializing { // solhint-disable-previous-line no-empty-blocks } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; /** * @title IRegistry * @dev Registry interface, it must follow the IAuthorizer interface. */ interface IRegistry is IAuthorizer { /** * @dev Emitted every time a new implementation is registered */ event Registered(bytes32 indexed namespace, address indexed implementation, bool stateless); /** * @dev Emitted every time an implementation is deprecated */ event Deprecated(bytes32 indexed namespace, address indexed implementation); /** * @dev Tells the data of an implementation: * @param implementation Address of the implementation to request it's data */ function implementationData(address implementation) external view returns (bool stateless, bool deprecated, bytes32 namespace); /** * @dev Tells if a specific implementation is registered under a certain namespace and it's not deprecated * @param namespace Namespace asking for * @param implementation Address of the implementation to be checked */ function isActive(bytes32 namespace, address implementation) external view returns (bool); /** * @dev Registers a new implementation for a given namespace * @param namespace Namespace to be used for the implementation * @param implementation Address of the implementation to be registered * @param stateless Whether the implementation is stateless or not */ function register(bytes32 namespace, address implementation, bool stateless) external; /** * @dev Deprecates a registered implementation * @param implementation Address of the implementation to be deprecated */ function deprecate(address implementation) external; } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title IStrategy * @dev Strategy interface required by Mimic Smart Vaults. It must follow the IImplementation interface. */ interface IStrategy is IImplementation { /** * @dev Tokens accepted to join the strategy */ function joinTokens() external view returns (address[] memory); /** * @dev Tokens accepted to exit the strategy */ function exitTokens() external view returns (address[] memory); /** * @dev Tells how much a value unit means expressed in the asset token. * For example, if a strategy has a value of 100 in T0, and then it has a value of 120 in T1, * and the value rate is 1.5, it means the strategy has earned 30 strategy tokens between T0 and T1. */ function valueRate() external view returns (uint256); /** * @dev Tells the last value an account has over time. Note this value can be outdated: there could be rewards to * be claimed that will affect the accrued value. For example, if an account has a value of 100 in T0, and then it * has a value of 120 in T1, it means it gained a 20% between T0 and T1. * @param account Address of the account querying the last value of */ function lastValue(address account) external view returns (uint256); /** * @dev Claim any existing rewards * @param data Arbitrary extra data * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join the interfaced DeFi protocol * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage value to join with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join * @return value Value represented by the joined amount */ function join(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); /** * @dev Exit the interfaced DeFi protocol * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage value to exit with * @param data Arbitrary extra data * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit * @return value Value represented by the exited amount */ function exit(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISwapConnector * @dev Swap Connector interface to perform token swaps. It must follow the IImplementation interface. */ interface ISwapConnector is IImplementation { /** * @dev Enum identifying the sources proposed: Uniswap V2, Uniswap V3, Balancer V2, Paraswap V5, 1inch V5, and Hop. */ enum Source { UniswapV2, UniswapV3, BalancerV2, ParaswapV5, OneInchV5, Hop } /** * @dev Swaps two tokens * @param source Source to execute the requested swap * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param minAmountOut Minimum amount of tokenOut willing to receive * @param data Encoded data to specify different swap parameters depending on the source picked */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external returns (uint256 amountOut); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/Clones.sol) pragma solidity ^0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for * deploying minimal proxy contracts, also known as "clones". * * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies * > a minimal bytecode implementation that delegates all calls to a known, fixed address. * * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2` * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the * deterministic method. * * _Available since v3.4._ */ library Clones { /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create opcode, which should never revert. */ function clone(address implementation) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create(0, ptr, 0x37) } require(instance != address(0), "ERC1167: create failed"); } /** * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`. * * This function uses the create2 opcode and a `salt` to deterministically deploy * the clone. Using the same `implementation` and `salt` multiple time will revert, since * the clones cannot be deployed twice at the same address. */ function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) instance := create2(0, ptr, 0x37, salt) } require(instance != address(0), "ERC1167: create2 failed"); } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress( address implementation, bytes32 salt, address deployer ) internal pure returns (address predicted) { /// @solidity memory-safe-assembly assembly { let ptr := mload(0x40) mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(ptr, 0x14), shl(0x60, implementation)) mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000) mstore(add(ptr, 0x38), shl(0x60, deployer)) mstore(add(ptr, 0x4c), salt) mstore(add(ptr, 0x6c), keccak256(ptr, 0x37)) predicted := keccak256(add(ptr, 0x37), 0x55) } } /** * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}. */ function predictDeterministicAddress(address implementation, bytes32 salt) internal view returns (address predicted) { return predictDeterministicAddress(implementation, salt, address(this)); } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/Address.sol"; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ``` * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Indicates that the contract has been initialized. * @custom:oz-retyped-from bool */ uint8 private _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool private _initializing; /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint8 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. Equivalent to `reinitializer(1)`. */ modifier initializer() { bool isTopLevelCall = !_initializing; require( (isTopLevelCall && _initialized < 1) || (!Address.isContract(address(this)) && _initialized == 1), "Initializable: contract is already initialized" ); _initialized = 1; if (isTopLevelCall) { _initializing = true; } _; if (isTopLevelCall) { _initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * `initializer` is equivalent to `reinitializer(1)`, so a reinitializer may be used after the original * initialization step. This is essential to configure modules that are added through upgrades and that require * initialization. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. */ modifier reinitializer(uint8 version) { require(!_initializing && _initialized < version, "Initializable: contract is already initialized"); _initialized = version; _initializing = true; _; _initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { require(_initializing, "Initializable: contract is not initializing"); _; } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. */ function _disableInitializers() internal virtual { require(!_initializing, "Initializable: contract is initializing"); if (_initialized < type(uint8).max) { _initialized = type(uint8).max; emit Initialized(type(uint8).max); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.0; import "./IERC20.sol"; import "./extensions/IERC20Metadata.sol"; import "../../utils/Context.sol"; /** * @dev Implementation of the {IERC20} interface. * * This implementation is agnostic to the way tokens are created. This means * that a supply mechanism has to be added in a derived contract using {_mint}. * For a generic mechanism see {ERC20PresetMinterPauser}. * * TIP: For a detailed writeup see our guide * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How * to implement supply mechanisms]. * * We have followed general OpenZeppelin Contracts guidelines: functions revert * instead returning `false` on failure. This behavior is nonetheless * conventional and does not conflict with the expectations of ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. * * Finally, the non-standard {decreaseAllowance} and {increaseAllowance} * functions have been added to mitigate the well-known issues around setting * allowances. See {IERC20-approve}. */ contract ERC20 is Context, IERC20, IERC20Metadata { mapping(address => uint256) private _balances; mapping(address => mapping(address => uint256)) private _allowances; uint256 private _totalSupply; string private _name; string private _symbol; /** * @dev Sets the values for {name} and {symbol}. * * The default value of {decimals} is 18. To select a different value for * {decimals} you should overload it. * * All two of these values are immutable: they can only be set once during * construction. */ constructor(string memory name_, string memory symbol_) { _name = name_; _symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the number of decimals used to get its user representation. * For example, if `decimals` equals `2`, a balance of `505` tokens should * be displayed to a user as `5.05` (`505 / 10 ** 2`). * * Tokens usually opt for a value of 18, imitating the relationship between * Ether and Wei. This is the value {ERC20} uses, unless this function is * overridden; * * NOTE: This information is only used for _display_ purposes: it in * no way affects any of the arithmetic of the contract, including * {IERC20-balanceOf} and {IERC20-transfer}. */ function decimals() public view virtual override returns (uint8) { return 18; } /** * @dev See {IERC20-totalSupply}. */ function totalSupply() public view virtual override returns (uint256) { return _totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual override returns (uint256) { return _balances[account]; } /** * @dev See {IERC20-transfer}. * * Requirements: * * - `to` cannot be the zero address. * - the caller must have a balance of at least `amount`. */ function transfer(address to, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _transfer(owner, to, amount); return true; } /** * @dev See {IERC20-allowance}. */ function allowance(address owner, address spender) public view virtual override returns (uint256) { return _allowances[owner][spender]; } /** * @dev See {IERC20-approve}. * * NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on * `transferFrom`. This is semantically equivalent to an infinite approval. * * Requirements: * * - `spender` cannot be the zero address. */ function approve(address spender, uint256 amount) public virtual override returns (bool) { address owner = _msgSender(); _approve(owner, spender, amount); return true; } /** * @dev See {IERC20-transferFrom}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * NOTE: Does not update the allowance if the current allowance * is the maximum `uint256`. * * Requirements: * * - `from` and `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. * - the caller must have allowance for ``from``'s tokens of at least * `amount`. */ function transferFrom( address from, address to, uint256 amount ) public virtual override returns (bool) { address spender = _msgSender(); _spendAllowance(from, spender, amount); _transfer(from, to, amount); return true; } /** * @dev Atomically increases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. */ function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) { address owner = _msgSender(); _approve(owner, spender, allowance(owner, spender) + addedValue); return true; } /** * @dev Atomically decreases the allowance granted to `spender` by the caller. * * This is an alternative to {approve} that can be used as a mitigation for * problems described in {IERC20-approve}. * * Emits an {Approval} event indicating the updated allowance. * * Requirements: * * - `spender` cannot be the zero address. * - `spender` must have allowance for the caller of at least * `subtractedValue`. */ function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) { address owner = _msgSender(); uint256 currentAllowance = allowance(owner, spender); require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero"); unchecked { _approve(owner, spender, currentAllowance - subtractedValue); } return true; } /** * @dev Moves `amount` of tokens from `from` to `to`. * * This internal function is equivalent to {transfer}, and can be used to * e.g. implement automatic token fees, slashing mechanisms, etc. * * Emits a {Transfer} event. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `from` must have a balance of at least `amount`. */ function _transfer( address from, address to, uint256 amount ) internal virtual { require(from != address(0), "ERC20: transfer from the zero address"); require(to != address(0), "ERC20: transfer to the zero address"); _beforeTokenTransfer(from, to, amount); uint256 fromBalance = _balances[from]; require(fromBalance >= amount, "ERC20: transfer amount exceeds balance"); unchecked { _balances[from] = fromBalance - amount; } _balances[to] += amount; emit Transfer(from, to, amount); _afterTokenTransfer(from, to, amount); } /** @dev Creates `amount` tokens and assigns them to `account`, increasing * the total supply. * * Emits a {Transfer} event with `from` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. */ function _mint(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: mint to the zero address"); _beforeTokenTransfer(address(0), account, amount); _totalSupply += amount; _balances[account] += amount; emit Transfer(address(0), account, amount); _afterTokenTransfer(address(0), account, amount); } /** * @dev Destroys `amount` tokens from `account`, reducing the * total supply. * * Emits a {Transfer} event with `to` set to the zero address. * * Requirements: * * - `account` cannot be the zero address. * - `account` must have at least `amount` tokens. */ function _burn(address account, uint256 amount) internal virtual { require(account != address(0), "ERC20: burn from the zero address"); _beforeTokenTransfer(account, address(0), amount); uint256 accountBalance = _balances[account]; require(accountBalance >= amount, "ERC20: burn amount exceeds balance"); unchecked { _balances[account] = accountBalance - amount; } _totalSupply -= amount; emit Transfer(account, address(0), amount); _afterTokenTransfer(account, address(0), amount); } /** * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens. * * This internal function is equivalent to `approve`, and can be used to * e.g. set automatic allowances for certain subsystems, etc. * * Emits an {Approval} event. * * Requirements: * * - `owner` cannot be the zero address. * - `spender` cannot be the zero address. */ function _approve( address owner, address spender, uint256 amount ) internal virtual { require(owner != address(0), "ERC20: approve from the zero address"); require(spender != address(0), "ERC20: approve to the zero address"); _allowances[owner][spender] = amount; emit Approval(owner, spender, amount); } /** * @dev Updates `owner` s allowance for `spender` based on spent `amount`. * * Does not update the allowance amount in case of infinite allowance. * Revert if not enough allowance is available. * * Might emit an {Approval} event. */ function _spendAllowance( address owner, address spender, uint256 amount ) internal virtual { uint256 currentAllowance = allowance(owner, spender); if (currentAllowance != type(uint256).max) { require(currentAllowance >= amount, "ERC20: insufficient allowance"); unchecked { _approve(owner, spender, currentAllowance - amount); } } } /** * @dev Hook that is called before any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * will be transferred to `to`. * - when `from` is zero, `amount` tokens will be minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens will be burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _beforeTokenTransfer( address from, address to, uint256 amount ) internal virtual {} /** * @dev Hook that is called after any transfer of tokens. This includes * minting and burning. * * Calling conditions: * * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens * has been transferred to `to`. * - when `from` is zero, `amount` tokens have been minted for `to`. * - when `to` is zero, `amount` of ``from``'s tokens have been burned. * - `from` and `to` are never both zero. * * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks]. */ function _afterTokenTransfer( address from, address to, uint256 amount ) internal virtual {} } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a >= b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv( uint256 x, uint256 y, uint256 denominator ) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv( uint256 x, uint256 y, uint256 denominator, Rounding rounding ) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. It the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. // We also know that `k`, the position of the most significant bit, is such that `msb(a) = 2**k`. // This gives `2**k < a <= 2**(k+1)` → `2**(k/2) <= sqrt(a) < 2 ** (k/2+1)`. // Using an algorithm similar to the msb conmputation, we are able to compute `result = 2**(k/2)` which is a // good first aproximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1; uint256 x = a; if (x >> 128 > 0) { x >>= 128; result <<= 64; } if (x >> 64 > 0) { x >>= 64; result <<= 32; } if (x >> 32 > 0) { x >>= 32; result <<= 16; } if (x >> 16 > 0) { x >>= 16; result <<= 8; } if (x >> 8 > 0) { x >>= 8; result <<= 4; } if (x >> 4 > 0) { x >>= 4; result <<= 2; } if (x >> 2 > 0) { result <<= 1; } // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { uint256 result = sqrt(a); if (rounding == Rounding.Up && result * result < a) { result += 1; } return result; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; /** * @title BridgeConnectorLib * @dev Library used to delegate-call bridge ops and decode return data correctly */ library BridgeConnectorLib { /** * @dev Delegate-calls a bridge to the bridge connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function bridge( address connector, uint8 source, uint256 chainId, address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) internal { bytes memory bridgeData = abi.encodeWithSelector( IBridgeConnector.bridge.selector, source, chainId, token, amountIn, minAmountOut, recipient, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(bridgeData); Address.verifyCallResult(success, returndata, 'BRIDGE_CALL_REVERTED'); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; /** * @title StrategyLib * @dev Library used to delegate-call to strategy and decode return data correctly */ library StrategyLib { /** * @dev Delegate-calls a claim to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function claim(address strategy, bytes memory data) internal returns (address[] memory, uint256[] memory) { bytes memory claimData = abi.encodeWithSelector(IStrategy.claim.selector, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(claimData); Address.verifyCallResult(success, returndata, 'CLAIM_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[])); } /** * @dev Delegate-calls a join to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory joinData = abi.encodeWithSelector(IStrategy.join.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(joinData); Address.verifyCallResult(success, returndata, 'JOIN_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } /** * @dev Delegate-calls a exit to a strategy and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) internal returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { bytes memory exitData = abi.encodeWithSelector(IStrategy.exit.selector, tokensIn, amountsIn, slippage, data); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = strategy.delegatecall(exitData); Address.verifyCallResult(success, returndata, 'EXIT_CALL_REVERTED'); return abi.decode(returndata, (address[], uint256[], uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; /** * @title SwapConnectorLib * @dev Library used to delegate-call swaps and decode return data correctly */ library SwapConnectorLib { /** * @dev Delegate-calls a swap to the swap connector and decodes de expected data * IMPORTANT! This helper method does not check any of the given params, these should be checked beforehand. */ function swap( address connector, uint8 source, address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) internal returns (uint256 amountOut) { bytes memory swapData = abi.encodeWithSelector( ISwapConnector.swap.selector, source, tokenIn, tokenOut, amountIn, minAmountOut, data ); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = connector.delegatecall(swapData); Address.verifyCallResult(success, returndata, 'SWAP_CALL_REVERTED'); return abi.decode(returndata, (uint256)); } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/auth/IAuthorizer.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/IPriceFeedProvider.sol'; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVault * @dev Mimic Smart Vault interface to manage assets. It must support also `IImplementation` and `IAuthorizer` */ interface ISmartVault is IPriceFeedProvider, IImplementation, IAuthorizer { enum SwapLimit { Slippage, MinAmountOut } enum BridgeLimit { Slippage, MinAmountOut } /** * @dev Emitted every time a new strategy is set for the Smart Vault */ event StrategySet(address indexed strategy, bool allowed); /** * @dev Emitted every time a new price oracle is set for the Smart Vault */ event PriceOracleSet(address indexed priceOracle); /** * @dev Emitted every time a new swap connector is set for the Smart Vault */ event SwapConnectorSet(address indexed swapConnector); /** * @dev Emitted every time a new bridge connector is set for the Smart Vault */ event BridgeConnectorSet(address indexed bridgeConnector); /** * @dev Emitted every time a new fee collector is set */ event FeeCollectorSet(address indexed feeCollector); /** * @dev Emitted every time the withdraw fee percentage is set */ event WithdrawFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the performance fee percentage is set */ event PerformanceFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the swap fee percentage is set */ event SwapFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time the bridge fee percentage is set */ event BridgeFeeSet(uint256 pct, uint256 cap, address token, uint256 period); /** * @dev Emitted every time `call` is called */ event Call(address indexed target, bytes callData, uint256 value, bytes result, bytes data); /** * @dev Emitted every time `collect` is called */ event Collect(address indexed token, address indexed from, uint256 collected, bytes data); /** * @dev Emitted every time `withdraw` is called */ event Withdraw(address indexed token, address indexed recipient, uint256 withdrawn, uint256 fee, bytes data); /** * @dev Emitted every time `wrap` is called */ event Wrap(uint256 amount, uint256 wrapped, bytes data); /** * @dev Emitted every time `unwrap` is called */ event Unwrap(uint256 amount, uint256 unwrapped, bytes data); /** * @dev Emitted every time `claim` is called */ event Claim(address indexed strategy, address[] tokens, uint256[] amounts, bytes data); /** * @dev Emitted every time `join` is called */ event Join( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256 slippage, bytes data ); /** * @dev Emitted every time `exit` is called */ event Exit( address indexed strategy, address[] tokensIn, uint256[] amountsIn, address[] tokensOut, uint256[] amountsOut, uint256 value, uint256[] fees, uint256 slippage, bytes data ); /** * @dev Emitted every time `swap` is called */ event Swap( uint8 indexed source, address indexed tokenIn, address indexed tokenOut, uint256 amountIn, uint256 amountOut, uint256 minAmountOut, uint256 fee, bytes data ); /** * @dev Emitted every time `bridge` is called */ event Bridge( uint8 indexed source, uint256 indexed chainId, address indexed token, uint256 amountIn, uint256 minAmountOut, uint256 fee, address recipient, bytes data ); /** * @dev Tells a strategy is allowed or not * @param strategy Address of the strategy being queried */ function isStrategyAllowed(address strategy) external view returns (bool); /** * @dev Tells the invested value for a strategy * @param strategy Address of the strategy querying the invested value of */ function investedValue(address strategy) external view returns (uint256); /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) external view returns (uint256); /** * @dev Tells the price oracle associated to a Smart Vault */ function priceOracle() external view returns (address); /** * @dev Tells the swap connector associated to a Smart Vault */ function swapConnector() external view returns (address); /** * @dev Tells the bridge connector associated to a Smart Vault */ function bridgeConnector() external view returns (address); /** * @dev Tells the address where fees will be deposited */ function feeCollector() external view returns (address); /** * @dev Tells the withdraw fee configuration */ function withdrawFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the performance fee configuration */ function performanceFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the swap fee configuration */ function swapFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the bridge fee configuration */ function bridgeFee() external view returns (uint256 pct, uint256 cap, address token, uint256 period, uint256 totalCharged, uint256 nextResetTime); /** * @dev Tells the address of the wrapped native token */ function wrappedNativeToken() external view returns (address); /** * @dev Sets a new strategy as allowed or not for a Smart Vault * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external; /** * @dev Sets a new price oracle to a Smart Vault * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external; /** * @dev Sets a new swap connector to a Smart Vault * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external; /** * @dev Sets a new bridge connector to a Smart Vault * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external; /** * @dev Sets a new fee collector * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external; /** * @dev Sets a new withdraw fee configuration * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new performance fee configuration * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new swap fee configuration * @param pct Swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Sets a new bridge fee configuration * @param pct Bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external; /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) external view returns (uint256); /** * @dev Execute an arbitrary call from a Smart Vault * @param target Address where the call will be sent * @param callData Calldata to be used for the call * @param value Value in wei that will be attached to the call * @param data Extra data that may enable or not different behaviors depending on the implementation * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external returns (bytes memory result); /** * @dev Collect tokens from a sender to a Smart Vault * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data that may enable or not different behaviors depending on the implementation * @return collected Amount of tokens assigned to the Smart Vault */ function collect(address token, address from, uint256 amount, bytes memory data) external returns (uint256 collected); /** * @dev Withdraw tokens to an external account * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data that may enable or not different behaviors depending on the implementation * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external returns (uint256 withdrawn); /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it * @param amount Amount of native tokens to be wrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external returns (uint256 wrapped); /** * @dev Unwrap an amount of wrapped native tokens * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data that may enable or not different behaviors depending on the implementation * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external returns (uint256 unwrapped); /** * @dev Claim strategy rewards * @param strategy Address of the strategy to claim rewards * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external returns (address[] memory tokens, uint256[] memory amounts); /** * @dev Join a strategy with an amount of tokens * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Exit a strategy * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data that may enable or not different behaviors depending on the implementation * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external returns (address[] memory tokensOut, uint256[] memory amountsOut); /** * @dev Swaps two tokens * @param source Source to request the swap. It depends on the Swap Connector attached to a Smart Vault. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Extra data that may enable or not different behaviors depending on the implementation * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external returns (uint256 amountOut); /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Extra data that may enable or not different behaviors depending on the implementation * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external returns (uint256 bridged); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity >=0.8.0; import '@mimic-fi/v2-registry/contracts/implementations/IImplementation.sol'; /** * @title ISmartVaultsFactory * @dev Smart Vaults Factory interface, it must follow the IImplementation interface. */ interface ISmartVaultsFactory is IImplementation { /** * @dev Emitted every time a new Smart Vault instance is created */ event Created(address indexed implementation, address indexed instance, bytes initializeResult); /** * @dev Tells the implementation associated to a contract instance * @param instance Address of the instance to request it's implementation */ function implementationOf(address instance) external view returns (address); /** * @dev Creates a new Smart Vault pointing to a registered implementation * @param salt Salt bytes to derivate the address of the new instance * @param implementation Address of the implementation to be instanced * @param initializeData Arbitrary data to be sent after deployment * @return instance Address of the new instance created */ function create(bytes32 salt, address implementation, bytes memory initializeData) external returns (address); } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@openzeppelin/contracts/utils/math/Math.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-helpers/contracts/math/UncheckedMath.sol'; import '@mimic-fi/v2-helpers/contracts/utils/Denominations.sol'; import '@mimic-fi/v2-helpers/contracts/utils/IWrappedNativeToken.sol'; import '@mimic-fi/v2-price-oracle/contracts/oracle/IPriceOracle.sol'; import '@mimic-fi/v2-price-oracle/contracts/feeds/PriceFeedProvider.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/InitializableAuthorizedImplementation.sol'; import './ISmartVault.sol'; import './helpers/StrategyLib.sol'; import './helpers/SwapConnectorLib.sol'; import './helpers/BridgeConnectorLib.sol'; /** * @title Smart Vault * @dev Smart Vault contract where funds are being held offering a bunch of primitives to allow users model any * type of action to manage them, these are: collector, withdraw, swap, bridge, join, exit, bridge, wrap, and unwrap. * * It inherits from InitializableAuthorizedImplementation which means it's implementation can be cloned * from the Mimic Registry and should be initialized depending on each case. */ contract SmartVault is ISmartVault, PriceFeedProvider, InitializableAuthorizedImplementation { using SafeERC20 for IERC20; using FixedPoint for uint256; using UncheckedMath for uint256; using StrategyLib for address; using SwapConnectorLib for address; using BridgeConnectorLib for address; // Namespace under which the Smart Vault is registered in the Mimic Registry bytes32 public constant override NAMESPACE = keccak256('SMART_VAULT'); /** * @dev Fee configuration parameters * @param pct Percentage expressed using 16 decimals (1e18 = 100%) * @param cap Maximum amount of fees to be charged per period * @param token Address of the token to express the cap amount * @param period Period length in seconds * @param totalCharged Total amount of fees charged in the current period * @param nextResetTime Current cap period end date */ struct Fee { uint256 pct; uint256 cap; address token; uint256 period; uint256 totalCharged; uint256 nextResetTime; } // Price oracle reference address public override priceOracle; // Swap connector reference address public override swapConnector; // Bridge connector reference address public override bridgeConnector; // List of allowed strategies indexed by strategy address mapping (address => bool) public override isStrategyAllowed; // List of invested values indexed by strategy address mapping (address => uint256) public override investedValue; // Fee collector address where fees will be deposited address public override feeCollector; // Withdraw fee configuration Fee public override withdrawFee; // Performance fee configuration Fee public override performanceFee; // Swap fee configuration Fee public override swapFee; // Bridge fee configuration Fee public override bridgeFee; // Wrapped native token reference address public immutable override wrappedNativeToken; /** * @dev Creates a new Smart Vault implementation with references that should be shared among all implementations * @param _wrappedNativeToken Address of the wrapped native token to be used * @param _registry Address of the Mimic Registry to be referenced */ constructor(address _wrappedNativeToken, address _registry) InitializableAuthorizedImplementation(_registry) { wrappedNativeToken = _wrappedNativeToken; } /** * @dev Initializes the Smart Vault instance * @param admin Address that will be granted with admin rights */ function initialize(address admin) external initializer { _initialize(admin); } /** * @dev It allows receiving native token transfers */ receive() external payable { // solhint-disable-previous-line no-empty-blocks } /** * @dev Sets a new strategy as allowed or not for a Smart Vault. Sender must be authorized. * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function setStrategy(address strategy, bool allowed) external override auth { _setStrategy(strategy, allowed); } /** * @dev Sets a new price oracle to a Smart Vault. Sender must be authorized. * @param newPriceOracle Address of the new price oracle to be set */ function setPriceOracle(address newPriceOracle) external override auth { _setPriceOracle(newPriceOracle); } /** * @dev Sets a new swap connector to a Smart Vault. Sender must be authorized. * @param newSwapConnector Address of the new swap connector to be set */ function setSwapConnector(address newSwapConnector) external override auth { _setSwapConnector(newSwapConnector); } /** * @dev Sets a new bridge connector to a Smart Vault. Sender must be authorized. * @param newBridgeConnector Address of the new bridge connector to be set */ function setBridgeConnector(address newBridgeConnector) external override auth { _setBridgeConnector(newBridgeConnector); } /** * @dev Sets a new fee collector. Sender must be authorized. * @param newFeeCollector Address of the new fee collector to be set */ function setFeeCollector(address newFeeCollector) external override auth { _setFeeCollector(newFeeCollector); } /** * @dev Sets a new withdraw fee. Sender must be authorized. * @param pct Withdraw fee percentage to be set * @param cap New maximum amount of withdraw fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the withdraw fee */ function setWithdrawFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(withdrawFee, pct, cap, token, period); emit WithdrawFeeSet(pct, cap, token, period); } /** * @dev Sets a new performance fee. Sender must be authorized. * @param pct Performance fee percentage to be set * @param cap New maximum amount of performance fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the performance fee */ function setPerformanceFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(performanceFee, pct, cap, token, period); emit PerformanceFeeSet(pct, cap, token, period); } /** * @dev Sets a new swap fee. Sender must be authorized. * @param pct New swap fee percentage to be set * @param cap New maximum amount of swap fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the swap fee */ function setSwapFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(swapFee, pct, cap, token, period); emit SwapFeeSet(pct, cap, token, period); } /** * @dev Sets a new bridge fee. Sender must be authorized. * @param pct New bridge fee percentage to be set * @param cap New maximum amount of bridge fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds for the bridge fee */ function setBridgeFee(uint256 pct, uint256 cap, address token, uint256 period) external override auth { _setFeeConfiguration(bridgeFee, pct, cap, token, period); emit BridgeFeeSet(pct, cap, token, period); } /** * @dev Sets a of price feed * @param base Token base to be set * @param quote Token quote to be set * @param feed Price feed to be set */ function setPriceFeed(address base, address quote, address feed) public override(IPriceFeedProvider, PriceFeedProvider) auth { super.setPriceFeed(base, quote, feed); } /** * @dev Tells the price of a token (base) in a given quote * @param base Token to rate * @param quote Token used for the price rate */ function getPrice(address base, address quote) public view override returns (uint256) { return IPriceOracle(priceOracle).getPrice(address(this), base, quote); } /** * @dev Tells the last value accrued for a strategy. Note this value can be outdated. * @param strategy Address of the strategy querying the last value of */ function lastValue(address strategy) public view override returns (uint256) { return IStrategy(strategy).lastValue(address(this)); } /** * @dev Execute an arbitrary call from a Smart Vault. Sender must be authorized. * @param target Address where the call will be sent * @param data Calldata to be used for the call * @param value Value in wei that will be attached to the call * @return result Call response if it was successful, otherwise it reverts */ function call(address target, bytes memory callData, uint256 value, bytes memory data) external override auth returns (bytes memory result) { result = Address.functionCallWithValue(target, callData, value, 'SMART_VAULT_ARBITRARY_CALL_FAIL'); emit Call(target, callData, value, result, data); } /** * @dev Collect tokens from an external account to a Smart Vault. Sender must be authorized. * @param token Address of the token to be collected * @param from Address where the tokens will be transfer from * @param amount Amount of tokens to be transferred * @param data Extra data only logged * @return collected Amount of tokens collected */ function collect(address token, address from, uint256 amount, bytes memory data) external override auth returns (uint256 collected) { require(amount > 0, 'COLLECT_AMOUNT_ZERO'); uint256 previousBalance = IERC20(token).balanceOf(address(this)); IERC20(token).safeTransferFrom(from, address(this), amount); uint256 currentBalance = IERC20(token).balanceOf(address(this)); collected = currentBalance - previousBalance; emit Collect(token, from, collected, data); } /** * @dev Withdraw tokens to an external account. Sender must be authorized. * @param token Address of the token to be withdrawn * @param amount Amount of tokens to withdraw * @param recipient Address where the tokens will be transferred to * @param data Extra data only logged * @return withdrawn Amount of tokens transferred to the recipient address */ function withdraw(address token, uint256 amount, address recipient, bytes memory data) external override auth returns (uint256 withdrawn) { require(amount > 0, 'WITHDRAW_AMOUNT_ZERO'); require(recipient != address(0), 'RECIPIENT_ZERO'); uint256 withdrawFeeAmount = recipient == feeCollector ? 0 : _payFee(token, amount, withdrawFee); withdrawn = amount - withdrawFeeAmount; _safeTransfer(token, recipient, withdrawn); emit Withdraw(token, recipient, withdrawn, withdrawFeeAmount, data); } /** * @dev Wrap an amount of native tokens to the wrapped ERC20 version of it. Sender must be authorized. * @param amount Amount of native tokens to be wrapped * @param data Extra data only logged * @return wrapped Amount of tokens wrapped */ function wrap(uint256 amount, bytes memory data) external override auth returns (uint256 wrapped) { require(amount > 0, 'WRAP_AMOUNT_ZERO'); require(address(this).balance >= amount, 'WRAP_INSUFFICIENT_AMOUNT'); IWrappedNativeToken wrappedToken = IWrappedNativeToken(wrappedNativeToken); uint256 previousBalance = wrappedToken.balanceOf(address(this)); wrappedToken.deposit{ value: amount }(); uint256 currentBalance = wrappedToken.balanceOf(address(this)); wrapped = currentBalance - previousBalance; emit Wrap(amount, wrapped, data); } /** * @dev Unwrap an amount of wrapped native tokens. Sender must be authorized. * @param amount Amount of wrapped native tokens to unwrapped * @param data Extra data only logged * @return unwrapped Amount of tokens unwrapped */ function unwrap(uint256 amount, bytes memory data) external override auth returns (uint256 unwrapped) { require(amount > 0, 'UNWRAP_AMOUNT_ZERO'); uint256 previousBalance = address(this).balance; IWrappedNativeToken(wrappedNativeToken).withdraw(amount); uint256 currentBalance = address(this).balance; unwrapped = currentBalance - previousBalance; emit Unwrap(amount, unwrapped, data); } /** * @dev Claim strategy rewards. Sender must be authorized. * @param strategy Address of the strategy to claim rewards * @param data Extra data passed to the strategy and logged * @return tokens Addresses of the tokens received as rewards * @return amounts Amounts of the tokens received as rewards */ function claim(address strategy, bytes memory data) external override auth returns (address[] memory tokens, uint256[] memory amounts) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); (tokens, amounts) = strategy.claim(data); emit Claim(strategy, tokens, amounts, data); } /** * @dev Join a strategy with an amount of tokens. Sender must be authorized. * @param strategy Address of the strategy to join * @param tokensIn List of token addresses to join with * @param amountsIn List of token amounts to join with * @param slippage Slippage that will be used to compute the join * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the join * @return amountsOut List of token amounts received after the join */ function join( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(slippage <= FixedPoint.ONE, 'JOIN_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'JOIN_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.join(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'JOIN_OUTPUT_INVALID_LENGTH'); investedValue[strategy] = investedValue[strategy] + value; emit Join(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, slippage, data); } /** * @dev Exit a strategy. Sender must be authorized. * @param strategy Address of the strategy to exit * @param tokensIn List of token addresses to exit with * @param amountsIn List of token amounts to exit with * @param slippage Slippage that will be used to compute the exit * @param data Extra data passed to the strategy and logged * @return tokensOut List of token addresses received after the exit * @return amountsOut List of token amounts received after the exit */ function exit( address strategy, address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data ) external override auth returns (address[] memory tokensOut, uint256[] memory amountsOut) { require(isStrategyAllowed[strategy], 'STRATEGY_NOT_ALLOWED'); require(investedValue[strategy] > 0, 'EXIT_NO_INVESTED_VALUE'); require(slippage <= FixedPoint.ONE, 'EXIT_SLIPPAGE_ABOVE_ONE'); require(tokensIn.length == amountsIn.length, 'EXIT_INPUT_INVALID_LENGTH'); uint256 value; (tokensOut, amountsOut, value) = strategy.exit(tokensIn, amountsIn, slippage, data); require(tokensOut.length == amountsOut.length, 'EXIT_OUTPUT_INVALID_LENGTH'); uint256[] memory performanceFeeAmounts = new uint256[](amountsOut.length); // It can rely on the last updated value since we have just exited, no need to compute current value uint256 valueBeforeExit = lastValue(strategy) + value; if (valueBeforeExit <= investedValue[strategy]) { // There were losses, invested value is simply reduced using the exited ratio compared to the value // before exit. Invested value is round up to avoid interpreting losses due to rounding errors investedValue[strategy] -= investedValue[strategy].mulUp(value).divUp(valueBeforeExit); } else { // If value gains are greater than the exit value, it means only gains are being withdrawn. In that case // the taxable amount is the entire exited amount, otherwise it should be the equivalent gains ratio of it. uint256 valueGains = valueBeforeExit.uncheckedSub(investedValue[strategy]); bool onlyGains = valueGains >= value; // If the exit value is greater than the value gains, the invested value should be reduced by the portion // of the invested value being exited. Otherwise, it's still the same, only gains are being withdrawn. // No need for checked math as we are checking it manually beforehand uint256 decrement = onlyGains ? 0 : value.uncheckedSub(valueGains); investedValue[strategy] = investedValue[strategy] - decrement; // Compute performance fees per token out for (uint256 i = 0; i < tokensOut.length; i = i.uncheckedAdd(1)) { address token = tokensOut[i]; uint256 amount = amountsOut[i]; uint256 taxableAmount = onlyGains ? amount : ((amount * valueGains) / value); uint256 feeAmount = _payFee(token, taxableAmount, performanceFee); amountsOut[i] = amount - feeAmount; performanceFeeAmounts[i] = feeAmount; } } emit Exit(strategy, tokensIn, amountsIn, tokensOut, amountsOut, value, performanceFeeAmounts, slippage, data); } /** * @dev Swaps two tokens. Sender must be authorized. * @param source Source to request the swap: Uniswap V2, Uniswap V3, Balancer V2, or Paraswap V5. * @param tokenIn Token being sent * @param tokenOut Token being received * @param amountIn Amount of tokenIn being swapped * @param limitType Swap limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param data Encoded data to specify different swap parameters depending on the source picked * @return amountOut Received amount of tokens out */ function swap( uint8 source, address tokenIn, address tokenOut, uint256 amountIn, SwapLimit limitType, uint256 limitAmount, bytes memory data ) external override auth returns (uint256 amountOut) { require(tokenIn != tokenOut, 'SWAP_SAME_TOKEN'); require(swapConnector != address(0), 'SWAP_CONNECTOR_NOT_SET'); uint256 minAmountOut; if (limitType == SwapLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == SwapLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'SWAP_SLIPPAGE_ABOVE_ONE'); uint256 price = getPrice(tokenIn, tokenOut); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = amountIn.mulUp(price).mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('SWAP_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(tokenIn).balanceOf(address(this)); uint256 preBalanceOut = IERC20(tokenOut).balanceOf(address(this)); swapConnector.swap(source, tokenIn, tokenOut, amountIn, minAmountOut, data); uint256 postBalanceIn = IERC20(tokenIn).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - amountIn, 'SWAP_BAD_TOKEN_IN_BALANCE'); uint256 amountOutBeforeFees = IERC20(tokenOut).balanceOf(address(this)) - preBalanceOut; require(amountOutBeforeFees >= minAmountOut, 'SWAP_MIN_AMOUNT'); uint256 swapFeeAmount = _payFee(tokenOut, amountOutBeforeFees, swapFee); amountOut = amountOutBeforeFees - swapFeeAmount; emit Swap(source, tokenIn, tokenOut, amountIn, amountOut, minAmountOut, swapFeeAmount, data); } /** * @dev Bridge assets to another chain * @param source Source to request the bridge. It depends on the Bridge Connector attached to a Smart Vault. * @param chainId ID of the destination chain * @param token Address of the token to be bridged * @param amount Amount of tokens to be bridged * @param limitType Bridge limit to be applied: slippage or min amount out * @param limitAmount Amount of the swap limit to be applied depending on limitType * @param recipient Address that will receive the tokens on the destination chain * @param data Encoded data to specify different bridge parameters depending on the source picked * @return bridged Amount requested to be bridged after fees */ function bridge( uint8 source, uint256 chainId, address token, uint256 amount, BridgeLimit limitType, uint256 limitAmount, address recipient, bytes memory data ) external override auth returns (uint256 bridged) { require(block.chainid != chainId, 'BRIDGE_SAME_CHAIN'); require(recipient != address(0), 'BRIDGE_RECIPIENT_ZERO'); require(bridgeConnector != address(0), 'BRIDGE_CONNECTOR_NOT_SET'); uint256 bridgeFeeAmount = _payFee(token, amount, bridgeFee); bridged = amount - bridgeFeeAmount; uint256 minAmountOut; if (limitType == BridgeLimit.MinAmountOut) { minAmountOut = limitAmount; } else if (limitType == BridgeLimit.Slippage) { require(limitAmount <= FixedPoint.ONE, 'BRIDGE_SLIPPAGE_ABOVE_ONE'); // No need for checked math as we are checking it manually beforehand // Always round up the expected min amount out. Limit amount is slippage. minAmountOut = bridged.mulUp(FixedPoint.ONE.uncheckedSub(limitAmount)); } else { revert('BRIDGE_INVALID_LIMIT_TYPE'); } uint256 preBalanceIn = IERC20(token).balanceOf(address(this)); bridgeConnector.bridge(source, chainId, token, bridged, minAmountOut, recipient, data); uint256 postBalanceIn = IERC20(token).balanceOf(address(this)); require(postBalanceIn >= preBalanceIn - bridged, 'BRIDGE_BAD_TOKEN_IN_BALANCE'); emit Bridge(source, chainId, token, bridged, minAmountOut, bridgeFeeAmount, recipient, data); } /** * @dev Internal function to pay the amount of fees to be charged based on a fee configuration to the fee collector * @param token Token being charged * @param amount Token amount to be taxed with fees * @param fee Fee configuration to be applied * @return paidAmount Amount of fees paid to the fee collector */ function _payFee(address token, uint256 amount, Fee storage fee) internal returns (uint256 paidAmount) { // Fee amounts are always rounded down uint256 feeAmount = amount.mulDown(fee.pct); // If cap amount or cap period are not set, charge the entire amount if (fee.token == address(0) || fee.cap == 0 || fee.period == 0) { _safeTransfer(token, feeCollector, feeAmount); return feeAmount; } // Reset cap totalizator if necessary if (block.timestamp >= fee.nextResetTime) { fee.totalCharged = 0; fee.nextResetTime = block.timestamp + fee.period; } // Calc fee amount in the fee token used for the cap uint256 feeTokenPrice = getPrice(token, fee.token); uint256 feeAmountInFeeToken = feeAmount.mulDown(feeTokenPrice); // Compute fee amount picking the minimum between the chargeable amount and the remaining part for the cap if (fee.totalCharged + feeAmountInFeeToken <= fee.cap) { paidAmount = feeAmount; fee.totalCharged += feeAmountInFeeToken; } else if (fee.totalCharged < fee.cap) { paidAmount = (fee.cap.uncheckedSub(fee.totalCharged) * feeAmount) / feeAmountInFeeToken; fee.totalCharged = fee.cap; } else { // This case is when the total charged amount is already greater than the cap amount. It could happen if // the cap amounts is decreased or if the cap token is changed. In this case the total charged amount is // not updated, and the amount to paid is zero. paidAmount = 0; } // Pay fee amount to the fee collector _safeTransfer(token, feeCollector, paidAmount); } /** * @dev Internal method to transfer ERC20 or native tokens from a Smart Vault * @param token Address of the ERC20 token to transfer * @param to Address transferring the tokens to * @param amount Amount of tokens to transfer */ function _safeTransfer(address token, address to, uint256 amount) internal { if (amount == 0) return; if (Denominations.isNativeToken(token)) Address.sendValue(payable(to), amount); else IERC20(token).safeTransfer(to, amount); } /** * @dev Sets a new strategy as allowed or not * @param strategy Address of the strategy to be set * @param allowed Whether the strategy is allowed or not */ function _setStrategy(address strategy, bool allowed) internal { if (allowed) _validateStatelessDependency(strategy); isStrategyAllowed[strategy] = allowed; emit StrategySet(strategy, allowed); } /** * @dev Sets a new price oracle * @param newPriceOracle New price oracle to be set */ function _setPriceOracle(address newPriceOracle) internal { _validateStatelessDependency(newPriceOracle); priceOracle = newPriceOracle; emit PriceOracleSet(newPriceOracle); } /** * @dev Sets a new swap connector * @param newSwapConnector New swap connector to be set */ function _setSwapConnector(address newSwapConnector) internal { _validateStatelessDependency(newSwapConnector); swapConnector = newSwapConnector; emit SwapConnectorSet(newSwapConnector); } /** * @dev Sets a new bridge connector * @param newBridgeConnector New bridge connector to be set */ function _setBridgeConnector(address newBridgeConnector) internal { _validateStatelessDependency(newBridgeConnector); bridgeConnector = newBridgeConnector; emit BridgeConnectorSet(newBridgeConnector); } /** * @dev Internal method to set the fee collector * @param newFeeCollector New fee collector to be set */ function _setFeeCollector(address newFeeCollector) internal { require(newFeeCollector != address(0), 'FEE_COLLECTOR_ZERO'); feeCollector = newFeeCollector; emit FeeCollectorSet(newFeeCollector); } /** * @dev Internal method to set a new fee cap configuration * @param fee Fee configuration to be updated * @param pct Fee percentage to be set * @param cap New maximum amount of fees to be charged per period * @param token Address of the token cap to be set * @param period New cap period length in seconds */ function _setFeeConfiguration(Fee storage fee, uint256 pct, uint256 cap, address token, uint256 period) internal { require(pct <= FixedPoint.ONE, 'FEE_PCT_ABOVE_ONE'); // If there is no fee percentage, there must not be a fee cap bool isZeroCap = token == address(0) && cap == 0 && period == 0; require(pct != 0 || isZeroCap, 'INVALID_CAP_WITH_FEE_ZERO'); // If there is a cap, all values must be non-zero bool isNonZeroCap = token != address(0) && cap != 0 && period != 0; require(isZeroCap || isNonZeroCap, 'INCONSISTENT_CAP_VALUES'); // Changing the fee percentage does not affect the totalizator at all, it only affects future fee charges fee.pct = pct; // Changing the fee cap amount does not affect the totalizator, it only applies when changing the for the total // charged amount. Note that it can happen that the cap amount is lower than the total charged amount if the // cap amount is lowered. However, there shouldn't be any accounting issues with that. fee.cap = cap; // Changing the cap period only affects the end time of the next period, but not the end date of the current one fee.period = period; // Therefore, only clean the totalizators if the cap is being removed if (isZeroCap) { fee.totalCharged = 0; fee.nextResetTime = 0; } else { // If cap values are not zero, set the next reset time if it wasn't set already // Otherwise, if the cap token is being changed the total charged amount must be updated accordingly if (fee.nextResetTime == 0) { fee.nextResetTime = block.timestamp + period; } else if (fee.token != token) { uint256 newTokenPrice = getPrice(fee.token, token); fee.totalCharged = fee.totalCharged.mulDown(newTokenPrice); } } // Finally simply set the new requested token fee.token = token; } } // SPDX-License-Identifier: GPL-3.0-or-later // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.8.0; import '@openzeppelin/contracts/proxy/Clones.sol'; import '@openzeppelin/contracts/utils/Address.sol'; import '@mimic-fi/v2-helpers/contracts/auth/Authorizer.sol'; import '@mimic-fi/v2-registry/contracts/registry/IRegistry.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import './ISmartVaultsFactory.sol'; /** * @title SmartVaultsFactory * @dev */ contract SmartVaultsFactory is ISmartVaultsFactory, BaseImplementation { using Address for address; // Smart Vaults Factory namespace bytes32 public constant override NAMESPACE = keccak256('SMART_VAULTS_FACTORY'); // Namespace to use by this deployer to fetch ISmartVault implementations from the Mimic Registry bytes32 private constant SMART_VAULT_NAMESPACE = keccak256('SMART_VAULT'); // List of instances' implementations indexed by instance address mapping (address => address) public override implementationOf; /** * @dev Creates a new Smart Vaults Factory implementation * @param registry Address of the Mimic Registry to be referenced */ constructor(address registry) BaseImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } /** * @dev Creates a new Smart Vault pointing to a registered implementation using CREATE2 * @param salt Salt bytes to derivate the address of the new instance * @param implementation Address of the implementation to be instanced. It must be registered and not deprecated. * @param initializeData Arbitrary data to be sent after deployment. It can be used to initialize the new instance. * @return instance Address of the new instance created */ function create(bytes32 salt, address implementation, bytes memory initializeData) external override returns (address instance) { require(implementation != address(0), 'IMPLEMENTATION_ADDRESS_ZERO'); require(IImplementation(implementation).NAMESPACE() == SMART_VAULT_NAMESPACE, 'BAD_IMPLEMENTATION_NAMESPACE'); require(IRegistry(registry).isActive(SMART_VAULT_NAMESPACE, implementation), 'BAD_SMART_VAULT_IMPLEMENTATION'); bytes32 senderSalt = keccak256(abi.encodePacked(msg.sender, salt)); instance = Clones.cloneDeterministic(address(implementation), senderSalt); implementationOf[instance] = implementation; bytes memory result = initializeData.length == 0 ? new bytes(0) : instance.functionCall(initializeData, 'SMART_VAULT_INIT_FAILED'); emit Created(implementation, instance, result); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-bridge-connector/contracts/IBridgeConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/BridgeMock.sol'; contract BridgeConnectorMock is IBridgeConnector, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('BRIDGE_CONNECTOR'); BridgeMock public immutable bridgeMock; constructor(address registry) BaseImplementation(registry) { bridgeMock = new BridgeMock(); } function bridge( uint8, /* source */ uint256, /* chainId */ address token, uint256 amountIn, uint256 minAmountOut, address recipient, bytes memory data ) external override { IERC20(token).approve(address(bridgeMock), amountIn); return bridgeMock.bridge(token, amountIn, minAmountOut, recipient, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-price-oracle/contracts/oracle/IPriceOracle.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; contract PriceOracleMock is IPriceOracle, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('PRICE_ORACLE'); struct Feed { bool set; uint256 rate; } mapping (address => mapping (address => Feed)) public mockedFeeds; constructor(address registry) BaseImplementation(registry) { // solhint-disable-previous-line no-empty-blocks } function mockRate(address base, address quote, uint256 newMockedRate) external { Feed storage feed = mockedFeeds[base][quote]; feed.set = true; feed.rate = newMockedRate; } function getPrice(address, address base, address quote) external view override returns (uint256) { if (base == quote) return FixedPoint.ONE; Feed storage feed = mockedFeeds[base][quote]; require(feed.set, 'PRICE_ORACLE_FEED_NOT_SET'); return feed.rate; } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; import '@mimic-fi/v2-strategies/contracts/IStrategy.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/TokenMock.sol'; contract StrategyMock is IStrategy, BaseImplementation { using FixedPoint for uint256; bytes32 public constant override NAMESPACE = keccak256('STRATEGY'); address public immutable lpt; address public immutable token; address public immutable rewardToken; event Claimed(bytes data); event Joined(address[] tokensIn, uint256[] amountsIn, uint256 slippage, bytes data); event Exited(address[] tokensIn, uint256[] amountsIn, uint256 slippage, bytes data); constructor(address registry) BaseImplementation(registry) { lpt = address(new TokenMock('LPT')); token = address(new TokenMock('TKN')); rewardToken = address(new TokenMock('REW')); } function mockGains(address account, uint256 multiplier) external { uint256 balance = IERC20(lpt).balanceOf(account); TokenMock(lpt).mint(account, balance * (multiplier - 1)); } function mockLosses(address account, uint256 divisor) external { uint256 balance = IERC20(lpt).balanceOf(account); TokenMock(lpt).burn(account, balance / divisor); } function joinTokens() public view override returns (address[] memory tokens) { tokens = new address[](1); tokens[0] = token; } function exitTokens() public view override returns (address[] memory tokens) { tokens = new address[](1); tokens[0] = lpt; } function valueRate() public pure override returns (uint256) { return FixedPoint.ONE; } function lastValue(address account) public view override returns (uint256) { return IERC20(lpt).balanceOf(account); } function claim(bytes memory data) external override returns (address[] memory tokens, uint256[] memory amounts) { uint256 amount = abi.decode(data, (uint256)); TokenMock(rewardToken).mint(address(this), amount); tokens = new address[](1); tokens[0] = rewardToken; amounts = new uint256[](1); amounts[0] = amount; emit Claimed(data); } function join(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external override returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { require(tokensIn.length == 1, 'STRATEGY_INVALID_TOKENS_IN_LEN'); require(amountsIn.length == 1, 'STRATEGY_INVALID_AMOUNTS_IN_LEN'); require(tokensIn[0] == token, 'STRATEGY_INVALID_JOIN_TOKEN'); tokensOut = exitTokens(); amountsOut = new uint256[](1); amountsOut[0] = amountsIn[0]; TokenMock(token).burn(address(this), amountsIn[0]); TokenMock(lpt).mint(address(this), amountsOut[0]); value = amountsOut[0].mulDown(valueRate()); emit Joined(tokensIn, amountsIn, slippage, data); } function exit(address[] memory tokensIn, uint256[] memory amountsIn, uint256 slippage, bytes memory data) external override returns (address[] memory tokensOut, uint256[] memory amountsOut, uint256 value) { require(tokensIn.length == 1, 'STRATEGY_INVALID_TOKENS_IN_LEN'); require(amountsIn.length == 1, 'STRATEGY_INVALID_AMOUNTS_IN_LEN'); require(tokensIn[0] == lpt, 'STRATEGY_INVALID_EXIT_TOKEN'); tokensOut = joinTokens(); amountsOut = new uint256[](1); amountsOut[0] = amountsIn[0]; TokenMock(lpt).burn(address(this), amountsIn[0]); TokenMock(token).mint(address(this), amountsOut[0]); value = amountsIn[0].divUp(valueRate()); emit Exited(tokensIn, amountsIn, slippage, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-swap-connector/contracts/ISwapConnector.sol'; import '@mimic-fi/v2-registry/contracts/implementations/BaseImplementation.sol'; import '../samples/DexMock.sol'; contract SwapConnectorMock is ISwapConnector, BaseImplementation { bytes32 public constant override NAMESPACE = keccak256('SWAP_CONNECTOR'); DexMock public immutable dex; constructor(address registry) BaseImplementation(registry) { dex = new DexMock(); } function mockRate(uint256 newRate) external { dex.mockRate(newRate); } function swap( uint8, /* source */ address tokenIn, address tokenOut, uint256 amountIn, uint256 minAmountOut, bytes memory data ) external override returns (uint256 amountOut) { IERC20(tokenIn).approve(address(dex), amountIn); return dex.swap(tokenIn, tokenOut, amountIn, minAmountOut, data); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; contract BridgeMock { function bridge(address token, uint256 amount, uint256, address, bytes memory) external { IERC20(token).transferFrom(msg.sender, address(this), amount); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import '@mimic-fi/v2-helpers/contracts/math/FixedPoint.sol'; contract DexMock { using FixedPoint for uint256; uint256 public mockedRate; constructor() { mockedRate = FixedPoint.ONE; } function mockRate(uint256 newRate) external { mockedRate = newRate; } function swap(address tokenIn, address tokenOut, uint256 amountIn, uint256, bytes memory) external returns (uint256 amountOut) { IERC20(tokenIn).transferFrom(msg.sender, address(this), amountIn); amountOut = amountIn.mulDown(mockedRate); IERC20(tokenOut).transfer(msg.sender, amountOut); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@openzeppelin/contracts/token/ERC20/ERC20.sol'; contract TokenMock is ERC20 { constructor(string memory symbol) ERC20(symbol, symbol) { // solhint-disable-previous-line no-empty-blocks } function mint(address account, uint256 amount) external { _mint(account, amount); } function burn(address account, uint256 amount) external { _burn(account, amount); } } // SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import '@mimic-fi/v2-helpers/contracts/utils/IWrappedNativeToken.sol'; contract WrappedNativeTokenMock is IWrappedNativeToken { uint8 public decimals = 18; string public name = 'Wrapped Native Token'; string public symbol = 'WNT'; event Deposit(address indexed to, uint256 amount); event Withdrawal(address indexed from, uint256 amount); mapping (address => uint256) public override balanceOf; mapping (address => mapping (address => uint256)) public override allowance; receive() external payable { deposit(); } function deposit() public payable override { balanceOf[msg.sender] += msg.value; emit Deposit(msg.sender, msg.value); } function withdraw(uint256 amount) public override { require(balanceOf[msg.sender] >= amount, 'WNT_NOT_ENOUGH_BALANCE'); balanceOf[msg.sender] -= amount; payable(msg.sender).transfer(amount); emit Withdrawal(msg.sender, amount); } function totalSupply() public view override returns (uint256) { return address(this).balance; } function approve(address spender, uint256 amount) public override returns (bool) { allowance[msg.sender][spender] = amount; emit Approval(msg.sender, spender, amount); return true; } function transfer(address to, uint256 amount) public override returns (bool) { return transferFrom(msg.sender, to, amount); } function transferFrom(address from, address to, uint256 amount) public override returns (bool) { require(balanceOf[from] >= amount, 'NOT_ENOUGH_BALANCE'); if (from != msg.sender && allowance[from][msg.sender] != type(uint256).max) { require(allowance[from][msg.sender] >= amount, 'NOT_ENOUGH_ALLOWANCE'); allowance[from][msg.sender] -= amount; } balanceOf[from] -= amount; balanceOf[to] += amount; emit Transfer(from, to, amount); return true; } }
File 5 of 6: WETH9
// Copyright (C) 2015, 2016, 2017 Dapphub // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. pragma solidity ^0.4.18; contract WETH9 { string public name = "Wrapped Ether"; string public symbol = "WETH"; uint8 public decimals = 18; event Approval(address indexed src, address indexed guy, uint wad); event Transfer(address indexed src, address indexed dst, uint wad); event Deposit(address indexed dst, uint wad); event Withdrawal(address indexed src, uint wad); mapping (address => uint) public balanceOf; mapping (address => mapping (address => uint)) public allowance; function() public payable { deposit(); } function deposit() public payable { balanceOf[msg.sender] += msg.value; Deposit(msg.sender, msg.value); } function withdraw(uint wad) public { require(balanceOf[msg.sender] >= wad); balanceOf[msg.sender] -= wad; msg.sender.transfer(wad); Withdrawal(msg.sender, wad); } function totalSupply() public view returns (uint) { return this.balance; } function approve(address guy, uint wad) public returns (bool) { allowance[msg.sender][guy] = wad; Approval(msg.sender, guy, wad); return true; } function transfer(address dst, uint wad) public returns (bool) { return transferFrom(msg.sender, dst, wad); } function transferFrom(address src, address dst, uint wad) public returns (bool) { require(balanceOf[src] >= wad); if (src != msg.sender && allowance[src][msg.sender] != uint(-1)) { require(allowance[src][msg.sender] >= wad); allowance[src][msg.sender] -= wad; } balanceOf[src] -= wad; balanceOf[dst] += wad; Transfer(src, dst, wad); return true; } } /* GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things. To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others. For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights. Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it. For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions. Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users. Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free. The precise terms and conditions for copying, distribution and modification follow. TERMS AND CONDITIONS 0. Definitions. "This License" refers to version 3 of the GNU General Public License. "Copyright" also means copyright-like laws that apply to other kinds of works, such as semiconductor masks. "The Program" refers to any copyrightable work licensed under this License. Each licensee is addressed as "you". "Licensees" and "recipients" may be individuals or organizations. To "modify" a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a "modified version" of the earlier work or a work "based on" the earlier work. A "covered work" means either the unmodified Program or a work based on the Program. To "propagate" a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well. To "convey" a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying. An interactive user interface displays "Appropriate Legal Notices" to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion. 1. Source Code. The "source code" for a work means the preferred form of the work for making modifications to it. "Object code" means any non-source form of a work. A "Standard Interface" means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language. The "System Libraries" of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A "Major Component", in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it. The "Corresponding Source" for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work. The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source. The Corresponding Source for a work in source code form is that same work. 2. Basic Permissions. All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law. You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you. Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary. 3. Protecting Users' Legal Rights From Anti-Circumvention Law. No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures. When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures. 4. Conveying Verbatim Copies. You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program. You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee. 5. Conveying Modified Source Versions. You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions: a) The work must carry prominent notices stating that you modified it, and giving a relevant date. b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to "keep intact all notices". c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it. d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so. A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an "aggregate" if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate. 6. Conveying Non-Source Forms. You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways: a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange. b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge. c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b. d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements. e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d. A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work. A "User Product" is either (1) a "consumer product", which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, "normally used" refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product. "Installation Information" for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made. If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM). The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network. Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying. 7. Additional Terms. "Additional permissions" are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions. When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission. Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms: a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or d) Limiting the use for publicity purposes of names of licensors or authors of the material; or e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors. All other non-permissive additional terms are considered "further restrictions" within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying. If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms. Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way. 8. Termination. You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11). However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation. Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice. Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10. 9. Acceptance Not Required for Having Copies. You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so. 10. Automatic Licensing of Downstream Recipients. Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License. An "entity transaction" is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts. You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it. 11. Patents. A "contributor" is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's "contributor version". A contributor's "essential patent claims" are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, "control" includes the right to grant patent sublicenses in a manner consistent with the requirements of this License. Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version. In the following three paragraphs, a "patent license" is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To "grant" such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party. If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. "Knowingly relying" means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid. If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it. A patent license is "discriminatory" if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007. Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law. 12. No Surrender of Others' Freedom. If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program. 13. Use with the GNU Affero General Public License. Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such. 14. Revised Versions of this License. The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License "or any later version" applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation. If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program. Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version. 15. Disclaimer of Warranty. THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 16. Limitation of Liability. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. 17. Interpretation of Sections 15 and 16. If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. <one line to give the program's name and a brief idea of what it does.> Copyright (C) <year> <name of author> This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. Also add information on how to contact you by electronic and paper mail. If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode: <program> Copyright (C) <year> <name of author> This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an "about box". You should also get your employer (if you work as a programmer) or school, if any, to sign a "copyright disclaimer" for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <http://www.gnu.org/licenses/>. The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <http://www.gnu.org/philosophy/why-not-lgpl.html>. */
File 6 of 6: AggregationRouterV5
/* ,▄▓▓██▌ ,╓▄▄▓▓▓▓▓▓▓▓▄▄▄,, ,▓██▓███▓▄▓███▓╬╬╬╬╬╬╬╬╬╬╬╬╬▓███▓▄, ▄█ ▓██╬╣███████╬▓▀╬╬▓▓▓████████████▓█████▄, ▓██▌ ▓██╬╣██████╬▓▌ ██████████████████████▌╙╙▀ⁿ ▐████████╬▓████▓▓█╨ ▄ ╟█████████▓▓╬╬╬╬╬▓▓█████▓▄ └▀▓▓▄╓ ╟█▓╣█████▓██████▀ ╓█▌ ███████▓▓▓▓▓╬╬╬╬╬╬╬╬╬╬╬╬▓██▓▄ └▀████▓▄╥ ▐██╬╬██████████╙ Æ▀─ ▓███▀╚╠╬╩▀▀███████▓▓╬╬╬╬╬╬╬╬╬██▄ └▀██▓▀▀█████▓╬▓██████▀ ▄█████▒╠" └╙▓██████▓╬╬╬╬╬╬╬╬██▄ └▀██▄,└╙▀▀████▌└╙ ^"▀╙╙╙"╙██ @▄ ╙▀███████╬╬╬╬╬╬╬██µ └▀██▓▄, ██▌ ╒ ╙█▓ ]▓█▓╔ ▀███████▓╬╬╬╬╬▓█▌ ▀█████ ▓ ╟█▌ ]╠██▓░▒╓ ▀████████╬╬╬╬╣█▌ ▐████ ╓█▀█▌ ,██▌ ╚Å███▓▒▒╠╓ ╙█████████╬╬╬╣█▌ └████ ▓█░░▓█ ▀▀▀ φ▒╫████▒▒▒▒╠╓ █████████▓╬╬▓█µ ╘███µ ▌▄█▓▄▓▀` ,▀ ,╔╠░▓██████▌╠▒▒▒φ ██████████╬╬██ ▐████µ╙▓▀` ,▀╙,╔╔φφφ╠░▄▓███████▌░▓╙▒▒▒╠ └██╬███████╬▓█⌐ ╫██ ▓▌ ▌φ▒▒░▓██████████████▌▒░▓╚▒▒▒╠ ▓██╬▓██████╣█▌ ██▌ ▌╔▒▒▄████████████████▒▒▒░▌╠▒▒▒≥▐██▓╬╬███████▌ ██▌ ,╓φ╠▓«▒▒▓████▀ ▀█████████▌▒▒▒╟░▒▒▒▒▐███╬╬╣████▓█▌ ▐██ ╠▒▄▓▓███▓████└ ▀████████▌▒▒░▌╚▒▒▒▐███▓╬╬████ ╙▌ ███ ) ╠▒░░░▒░╬████▀ └████████░▒▒░╬∩▒▒▓████╬╬╣███ ▓██ ╠╠▒▒▐█▀▀▌`░╫██ ███████▒▒▒▒░▒▒½█████╬╬╣███ ███ ,█▄ ╠▒▒▒╫▌,▄▀,▒╫██ ╟██████▒▒▒░╣⌠▒▓█████╬╬╣██▌ ╘██µ ██` ╠▒▒░██╬φ╠▄▓██` ██████░░▌φ╠░▓█████▓╬╬▓██ ╟██ .φ╠▒░▄█▀░░▄██▀└ █████▌▒╣φ▒░▓██████╬╬╣██ ▀██▄▄▄╓▄███████▀ ▐█████░▓φ▒▄███████▓╬╣██ ╙▀▀▀██▀└ ████▓▄▀φ▄▓████████╬▓█▀ ▓███╬╩╔╣██████████▓██└ ╓████▀▄▓████████▀████▀ ,▓███████████████─]██╙ ,▄▓██████████████▀└ ╙ ,╓▄▓███████████████▀╙ `"▀▀▀████████▀▀▀▀`▄███▀▀└ └└ 11\ 11\ 11\ 11\ 11\ 11\ 11\ 1111 | \__| 11 | 111\ 11 | 11 | 11 | \_11 | 11\ 1111111\ 1111111\ 1111111\ 1111\ 11 | 111111\ 111111\ 11\ 11\ 11\ 111111\ 111111\ 11 | 11\ 11 | 11 |11 __11\ 11 _____|11 __11\ 11 11\11 |11 __11\\_11 _| 11 | 11 | 11 |11 __11\ 11 __11\ 11 | 11 | 11 | 11 |11 | 11 |11 / 11 | 11 | 11 \1111 |11111111 | 11 | 11 | 11 | 11 |11 / 11 |11 | \__|111111 / 11 | 11 |11 | 11 |11 | 11 | 11 | 11 |\111 |11 ____| 11 |11\ 11 | 11 | 11 |11 | 11 |11 | 11 _11< 111111\ 11 |11 | 11 |\1111111\ 11 | 11 | 11 | \11 |\1111111\ \1111 |\11111\1111 |\111111 |11 | 11 | \11\ \______|\__|\__| \__| \_______|\__| \__| \__| \__| \_______| \____/ \_____\____/ \______/ \__| \__| \__| 111111\ 11\ 11\ 11 __11\ 11 | \__| 11 / 11 | 111111\ 111111\ 111111\ 111111\ 111111\ 111111\ 111111\ 11\ 111111\ 1111111\ 11111111 |11 __11\ 11 __11\ 11 __11\ 11 __11\ 11 __11\ \____11\\_11 _| 11 |11 __11\ 11 __11\ 11 __11 |11 / 11 |11 / 11 |11 | \__|11111111 |11 / 11 | 1111111 | 11 | 11 |11 / 11 |11 | 11 | 11 | 11 |11 | 11 |11 | 11 |11 | 11 ____|11 | 11 |11 __11 | 11 |11\ 11 |11 | 11 |11 | 11 | 11 | 11 |\1111111 |\1111111 |11 | \1111111\ \1111111 |\1111111 | \1111 |11 |\111111 |11 | 11 | \__| \__| \____11 | \____11 |\__| \_______| \____11 | \_______| \____/ \__| \______/ \__| \__| 11\ 11 |11\ 11 | 11\ 11 | \111111 |\111111 | \111111 | \______/ \______/ \______/ 1111111\ 11\ 11 __11\ 11 | 11 | 11 | 111111\ 11\ 11\ 111111\ 111111\ 111111\ 1111111 |11 __11\ 11 | 11 |\_11 _| 11 __11\ 11 __11\ 11 __11< 11 / 11 |11 | 11 | 11 | 11111111 |11 | \__| 11 | 11 |11 | 11 |11 | 11 | 11 |11\ 11 ____|11 | 11 | 11 |\111111 |\111111 | \1111 |\1111111\ 11 | \__| \__| \______/ \______/ \____/ \_______|\__| */ // SPDX-License-Identifier: MIT // File contracts/interfaces/IClipperExchangeInterface.sol pragma solidity 0.8.17; /// @title Clipper interface subset used in swaps interface IClipperExchangeInterface { struct Signature { uint8 v; bytes32 r; bytes32 s; } function sellEthForToken(address outputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external payable; function sellTokenForEth(address inputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external; function swap(address inputToken, address outputToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, address destinationAddress, Signature calldata theSignature, bytes calldata auxiliaryData) external; } // File contracts/helpers/RouterErrors.sol pragma solidity 0.8.17; library RouterErrors { error ReturnAmountIsNotEnough(); error InvalidMsgValue(); error ERC20TransferFailed(); } // File @1inch/solidity-utils/contracts/[email protected] pragma solidity ^0.8.0; abstract contract EthReceiver { error EthDepositRejected(); receive() external payable { _receive(); } function _receive() internal virtual { // solhint-disable-next-line avoid-tx-origin if (msg.sender == tx.origin) revert EthDepositRejected(); } } // File @openzeppelin/contracts/token/ERC20/[email protected] // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the amount of tokens in existence. */ function totalSupply() external view returns (uint256); /** * @dev Returns the amount of tokens owned by `account`. */ function balanceOf(address account) external view returns (uint256); /** * @dev Moves `amount` tokens from the caller's account to `to`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address to, uint256 amount) external returns (bool); /** * @dev Returns the remaining number of tokens that `spender` will be * allowed to spend on behalf of `owner` through {transferFrom}. This is * zero by default. * * This value changes when {approve} or {transferFrom} are called. */ function allowance(address owner, address spender) external view returns (uint256); /** * @dev Sets `amount` as the allowance of `spender` over the caller's tokens. * * Returns a boolean value indicating whether the operation succeeded. * * IMPORTANT: Beware that changing an allowance with this method brings the risk * that someone may use both the old and the new allowance by unfortunate * transaction ordering. One possible solution to mitigate this race * condition is to first reduce the spender's allowance to 0 and set the * desired value afterwards: * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729 * * Emits an {Approval} event. */ function approve(address spender, uint256 amount) external returns (bool); /** * @dev Moves `amount` tokens from `from` to `to` using the * allowance mechanism. `amount` is then deducted from the caller's * allowance. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 amount ) external returns (bool); } // File @1inch/solidity-utils/contracts/interfaces/[email protected] pragma solidity ^0.8.0; interface IDaiLikePermit { function permit(address holder, address spender, uint256 nonce, uint256 expiry, bool allowed, uint8 v, bytes32 r, bytes32 s) external; } // File @1inch/solidity-utils/contracts/libraries/[email protected] pragma solidity ^0.8.0; library RevertReasonForwarder { function reRevert() internal pure { // bubble up revert reason from latest external call /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } // File @openzeppelin/contracts/token/ERC20/extensions/[email protected] // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); } // File @1inch/solidity-utils/contracts/libraries/[email protected] pragma solidity ^0.8.0; library SafeERC20 { error SafeTransferFailed(); error SafeTransferFromFailed(); error ForceApproveFailed(); error SafeIncreaseAllowanceFailed(); error SafeDecreaseAllowanceFailed(); error SafePermitBadLength(); // Ensures method do not revert or return boolean `true`, admits call to non-smart-contract function safeTransferFrom(IERC20 token, address from, address to, uint256 amount) internal { bytes4 selector = token.transferFrom.selector; bool success; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) mstore(data, selector) mstore(add(data, 0x04), from) mstore(add(data, 0x24), to) mstore(add(data, 0x44), amount) success := call(gas(), token, 0, data, 100, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } if (!success) revert SafeTransferFromFailed(); } // Ensures method do not revert or return boolean `true`, admits call to non-smart-contract function safeTransfer(IERC20 token, address to, uint256 value) internal { if (!_makeCall(token, token.transfer.selector, to, value)) { revert SafeTransferFailed(); } } // If `approve(from, to, amount)` fails, try to `approve(from, to, 0)` before retry function forceApprove(IERC20 token, address spender, uint256 value) internal { if (!_makeCall(token, token.approve.selector, spender, value)) { if (!_makeCall(token, token.approve.selector, spender, 0) || !_makeCall(token, token.approve.selector, spender, value)) { revert ForceApproveFailed(); } } } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 allowance = token.allowance(address(this), spender); if (value > type(uint256).max - allowance) revert SafeIncreaseAllowanceFailed(); forceApprove(token, spender, allowance + value); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 allowance = token.allowance(address(this), spender); if (value > allowance) revert SafeDecreaseAllowanceFailed(); forceApprove(token, spender, allowance - value); } function safePermit(IERC20 token, bytes calldata permit) internal { bool success; if (permit.length == 32 * 7) { success = _makeCalldataCall(token, IERC20Permit.permit.selector, permit); } else if (permit.length == 32 * 8) { success = _makeCalldataCall(token, IDaiLikePermit.permit.selector, permit); } else { revert SafePermitBadLength(); } if (!success) RevertReasonForwarder.reRevert(); } function _makeCall(IERC20 token, bytes4 selector, address to, uint256 amount) private returns(bool success) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) mstore(data, selector) mstore(add(data, 0x04), to) mstore(add(data, 0x24), amount) success := call(gas(), token, 0, data, 0x44, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } } function _makeCalldataCall(IERC20 token, bytes4 selector, bytes calldata args) private returns(bool success) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let len := add(4, args.length) let data := mload(0x40) mstore(data, selector) calldatacopy(add(data, 0x04), args.offset, args.length) success := call(gas(), token, 0, data, len, 0x0, 0x20) if success { switch returndatasize() case 0 { success := gt(extcodesize(token), 0) } default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) } } } } } // File @1inch/solidity-utils/contracts/interfaces/[email protected] pragma solidity ^0.8.0; interface IWETH is IERC20 { function deposit() external payable; function withdraw(uint256 amount) external; } // File contracts/routers/ClipperRouter.sol pragma solidity 0.8.17; /// @title Clipper router that allows to use `ClipperExchangeInterface` for swaps contract ClipperRouter is EthReceiver { using SafeERC20 for IERC20; uint256 private constant _SIGNATURE_S_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; uint256 private constant _SIGNATURE_V_SHIFT = 255; bytes6 private constant _INCH_TAG_WITH_LENGTH_PREFIX = "\x051INCH"; IERC20 private constant _ETH = IERC20(address(0)); IWETH private immutable _WETH; // solhint-disable-line var-name-mixedcase constructor(IWETH weth) { _WETH = weth; } /// @notice Same as `clipperSwapTo` but calls permit first, /// allowing to approve token spending and make a swap in one transaction. /// @dev See tests for examples /// @param recipient Address that will receive swap funds /// @param srcToken Source token /// @param dstToken Destination token /// @param inputAmount Amount of source tokens to swap /// @param outputAmount Amount of destination tokens to receive /// @param goodUntil Timestamp until the swap will be valid /// @param r Clipper order signature (r part) /// @param vs Clipper order signature (vs part) /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls. /// @return returnAmount Amount of destination tokens received function clipperSwapToWithPermit( IClipperExchangeInterface clipperExchange, address payable recipient, IERC20 srcToken, IERC20 dstToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, bytes32 r, bytes32 vs, bytes calldata permit ) external returns(uint256 returnAmount) { srcToken.safePermit(permit); return clipperSwapTo(clipperExchange, recipient, srcToken, dstToken, inputAmount, outputAmount, goodUntil, r, vs); } /// @notice Same as `clipperSwapTo` but uses `msg.sender` as recipient /// @param srcToken Source token /// @param dstToken Destination token /// @param inputAmount Amount of source tokens to swap /// @param outputAmount Amount of destination tokens to receive /// @param goodUntil Timestamp until the swap will be valid /// @param r Clipper order signature (r part) /// @param vs Clipper order signature (vs part) /// @return returnAmount Amount of destination tokens received function clipperSwap( IClipperExchangeInterface clipperExchange, IERC20 srcToken, IERC20 dstToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, bytes32 r, bytes32 vs ) external payable returns(uint256 returnAmount) { return clipperSwapTo(clipperExchange, payable(msg.sender), srcToken, dstToken, inputAmount, outputAmount, goodUntil, r, vs); } /// @notice Performs swap using Clipper exchange. Wraps and unwraps ETH if required. /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited /// @param recipient Address that will receive swap funds /// @param srcToken Source token /// @param dstToken Destination token /// @param inputAmount Amount of source tokens to swap /// @param outputAmount Amount of destination tokens to receive /// @param goodUntil Timestamp until the swap will be valid /// @param r Clipper order signature (r part) /// @param vs Clipper order signature (vs part) /// @return returnAmount Amount of destination tokens received function clipperSwapTo( IClipperExchangeInterface clipperExchange, address payable recipient, IERC20 srcToken, IERC20 dstToken, uint256 inputAmount, uint256 outputAmount, uint256 goodUntil, bytes32 r, bytes32 vs ) public payable returns(uint256 returnAmount) { bool srcETH = srcToken == _ETH; if (srcETH) { if (msg.value != inputAmount) revert RouterErrors.InvalidMsgValue(); } else if (srcToken == _WETH) { srcETH = true; if (msg.value != 0) revert RouterErrors.InvalidMsgValue(); // _WETH.transferFrom(msg.sender, address(this), inputAmount); // _WETH.withdraw(inputAmount); address weth = address(_WETH); bytes4 transferFromSelector = _WETH.transferFrom.selector; bytes4 withdrawSelector = _WETH.withdraw.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, transferFromSelector) mstore(add(ptr, 0x04), caller()) mstore(add(ptr, 0x24), address()) mstore(add(ptr, 0x44), inputAmount) if iszero(call(gas(), weth, 0, ptr, 0x64, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } mstore(ptr, withdrawSelector) mstore(add(ptr, 0x04), inputAmount) if iszero(call(gas(), weth, 0, ptr, 0x24, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } else { if (msg.value != 0) revert RouterErrors.InvalidMsgValue(); srcToken.safeTransferFrom(msg.sender, address(clipperExchange), inputAmount); } if (srcETH) { // clipperExchange.sellEthForToken{value: inputAmount}(address(dstToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG); address clipper = address(clipperExchange); bytes4 selector = clipperExchange.sellEthForToken.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), dstToken) mstore(add(ptr, 0x24), inputAmount) mstore(add(ptr, 0x44), outputAmount) mstore(add(ptr, 0x64), goodUntil) mstore(add(ptr, 0x84), recipient) mstore(add(ptr, 0xa4), add(27, shr(_SIGNATURE_V_SHIFT, vs))) mstore(add(ptr, 0xc4), r) mstore(add(ptr, 0xe4), and(vs, _SIGNATURE_S_MASK)) mstore(add(ptr, 0x104), 0x120) mstore(add(ptr, 0x143), _INCH_TAG_WITH_LENGTH_PREFIX) if iszero(call(gas(), clipper, inputAmount, ptr, 0x149, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } else if (dstToken == _ETH || dstToken == _WETH) { // clipperExchange.sellTokenForEth(address(srcToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG); address clipper = address(clipperExchange); bytes4 selector = clipperExchange.sellTokenForEth.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), srcToken) mstore(add(ptr, 0x24), inputAmount) mstore(add(ptr, 0x44), outputAmount) mstore(add(ptr, 0x64), goodUntil) switch iszero(dstToken) case 1 { mstore(add(ptr, 0x84), recipient) } default { mstore(add(ptr, 0x84), address()) } mstore(add(ptr, 0xa4), add(27, shr(_SIGNATURE_V_SHIFT, vs))) mstore(add(ptr, 0xc4), r) mstore(add(ptr, 0xe4), and(vs, _SIGNATURE_S_MASK)) mstore(add(ptr, 0x104), 0x120) mstore(add(ptr, 0x143), _INCH_TAG_WITH_LENGTH_PREFIX) if iszero(call(gas(), clipper, 0, ptr, 0x149, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } if (dstToken == _WETH) { // _WETH.deposit{value: outputAmount}(); // _WETH.transfer(recipient, outputAmount); address weth = address(_WETH); bytes4 depositSelector = _WETH.deposit.selector; bytes4 transferSelector = _WETH.transfer.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, depositSelector) if iszero(call(gas(), weth, outputAmount, ptr, 0x04, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } mstore(ptr, transferSelector) mstore(add(ptr, 0x04), recipient) mstore(add(ptr, 0x24), outputAmount) if iszero(call(gas(), weth, 0, ptr, 0x44, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } } else { // clipperExchange.swap(address(srcToken), address(dstToken), inputAmount, outputAmount, goodUntil, recipient, signature, _INCH_TAG); address clipper = address(clipperExchange); bytes4 selector = clipperExchange.swap.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), srcToken) mstore(add(ptr, 0x24), dstToken) mstore(add(ptr, 0x44), inputAmount) mstore(add(ptr, 0x64), outputAmount) mstore(add(ptr, 0x84), goodUntil) mstore(add(ptr, 0xa4), recipient) mstore(add(ptr, 0xc4), add(27, shr(_SIGNATURE_V_SHIFT, vs))) mstore(add(ptr, 0xe4), r) mstore(add(ptr, 0x104), and(vs, _SIGNATURE_S_MASK)) mstore(add(ptr, 0x124), 0x140) mstore(add(ptr, 0x163), _INCH_TAG_WITH_LENGTH_PREFIX) if iszero(call(gas(), clipper, 0, ptr, 0x169, 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } return outputAmount; } } // File contracts/interfaces/IAggregationExecutor.sol pragma solidity 0.8.17; /// @title Interface for making arbitrary calls during swap interface IAggregationExecutor { /// @notice propagates information about original msg.sender and executes arbitrary data function execute(address msgSender) external payable; // 0x4b64e492 } // File @1inch/solidity-utils/contracts/interfaces/[email protected] pragma solidity ^0.8.0; interface IERC20MetadataUppercase { function NAME() external view returns (string memory); // solhint-disable-line func-name-mixedcase function SYMBOL() external view returns (string memory); // solhint-disable-line func-name-mixedcase } // File @1inch/solidity-utils/contracts/libraries/[email protected] pragma solidity ^0.8.0; /// @title Library with gas-efficient string operations library StringUtil { function toHex(uint256 value) internal pure returns (string memory) { return toHex(abi.encodePacked(value)); } function toHex(address value) internal pure returns (string memory) { return toHex(abi.encodePacked(value)); } function toHex(bytes memory data) internal pure returns (string memory result) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly function _toHex16(input) -> output { output := or( and(input, 0xFFFFFFFFFFFFFFFF000000000000000000000000000000000000000000000000), shr(64, and(input, 0x0000000000000000FFFFFFFFFFFFFFFF00000000000000000000000000000000)) ) output := or( and(output, 0xFFFFFFFF000000000000000000000000FFFFFFFF000000000000000000000000), shr(32, and(output, 0x00000000FFFFFFFF000000000000000000000000FFFFFFFF0000000000000000)) ) output := or( and(output, 0xFFFF000000000000FFFF000000000000FFFF000000000000FFFF000000000000), shr(16, and(output, 0x0000FFFF000000000000FFFF000000000000FFFF000000000000FFFF00000000)) ) output := or( and(output, 0xFF000000FF000000FF000000FF000000FF000000FF000000FF000000FF000000), shr(8, and(output, 0x00FF000000FF000000FF000000FF000000FF000000FF000000FF000000FF0000)) ) output := or( shr(4, and(output, 0xF000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000)), shr(8, and(output, 0x0F000F000F000F000F000F000F000F000F000F000F000F000F000F000F000F00)) ) output := add( add(0x3030303030303030303030303030303030303030303030303030303030303030, output), mul( and( shr(4, add(output, 0x0606060606060606060606060606060606060606060606060606060606060606)), 0x0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F0F ), 7 // Change 7 to 39 for lower case output ) ) } result := mload(0x40) let length := mload(data) let resultLength := shl(1, length) let toPtr := add(result, 0x22) // 32 bytes for length + 2 bytes for '0x' mstore(0x40, add(toPtr, resultLength)) // move free memory pointer mstore(add(result, 2), 0x3078) // 0x3078 is right aligned so we write to `result + 2` // to store the last 2 bytes in the beginning of the string mstore(result, add(resultLength, 2)) // extra 2 bytes for '0x' for { let fromPtr := add(data, 0x20) let endPtr := add(fromPtr, length) } lt(fromPtr, endPtr) { fromPtr := add(fromPtr, 0x20) } { let rawData := mload(fromPtr) let hexData := _toHex16(rawData) mstore(toPtr, hexData) toPtr := add(toPtr, 0x20) hexData := _toHex16(shl(128, rawData)) mstore(toPtr, hexData) toPtr := add(toPtr, 0x20) } } } } // File @openzeppelin/contracts/token/ERC20/extensions/[email protected] // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.0; /** * @dev Interface for the optional metadata functions from the ERC20 standard. * * _Available since v4.1._ */ interface IERC20Metadata is IERC20 { /** * @dev Returns the name of the token. */ function name() external view returns (string memory); /** * @dev Returns the symbol of the token. */ function symbol() external view returns (string memory); /** * @dev Returns the decimals places of the token. */ function decimals() external view returns (uint8); } // File @1inch/solidity-utils/contracts/libraries/[email protected] pragma solidity ^0.8.0; library UniERC20 { using SafeERC20 for IERC20; error InsufficientBalance(); error ApproveCalledOnETH(); error NotEnoughValue(); error FromIsNotSender(); error ToIsNotThis(); error ETHTransferFailed(); uint256 private constant _RAW_CALL_GAS_LIMIT = 5000; IERC20 private constant _ETH_ADDRESS = IERC20(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE); IERC20 private constant _ZERO_ADDRESS = IERC20(address(0)); function isETH(IERC20 token) internal pure returns (bool) { return (token == _ZERO_ADDRESS || token == _ETH_ADDRESS); } function uniBalanceOf(IERC20 token, address account) internal view returns (uint256) { if (isETH(token)) { return account.balance; } else { return token.balanceOf(account); } } /// @dev note that this function does nothing in case of zero amount function uniTransfer(IERC20 token, address payable to, uint256 amount) internal { if (amount > 0) { if (isETH(token)) { if (address(this).balance < amount) revert InsufficientBalance(); // solhint-disable-next-line avoid-low-level-calls (bool success, ) = to.call{value: amount, gas: _RAW_CALL_GAS_LIMIT}(""); if (!success) revert ETHTransferFailed(); } else { token.safeTransfer(to, amount); } } } /// @dev note that this function does nothing in case of zero amount function uniTransferFrom(IERC20 token, address payable from, address to, uint256 amount) internal { if (amount > 0) { if (isETH(token)) { if (msg.value < amount) revert NotEnoughValue(); if (from != msg.sender) revert FromIsNotSender(); if (to != address(this)) revert ToIsNotThis(); if (msg.value > amount) { // Return remainder if exist unchecked { // solhint-disable-next-line avoid-low-level-calls (bool success, ) = from.call{value: msg.value - amount, gas: _RAW_CALL_GAS_LIMIT}(""); if (!success) revert ETHTransferFailed(); } } } else { token.safeTransferFrom(from, to, amount); } } } function uniSymbol(IERC20 token) internal view returns(string memory) { return _uniDecode(token, IERC20Metadata.symbol.selector, IERC20MetadataUppercase.SYMBOL.selector); } function uniName(IERC20 token) internal view returns(string memory) { return _uniDecode(token, IERC20Metadata.name.selector, IERC20MetadataUppercase.NAME.selector); } function uniApprove(IERC20 token, address to, uint256 amount) internal { if (isETH(token)) revert ApproveCalledOnETH(); token.forceApprove(to, amount); } /// 20K gas is provided to account for possible implementations of name/symbol /// (token implementation might be behind proxy or store the value in storage) function _uniDecode(IERC20 token, bytes4 lowerCaseSelector, bytes4 upperCaseSelector) private view returns(string memory result) { if (isETH(token)) { return "ETH"; } (bool success, bytes memory data) = address(token).staticcall{ gas: 20000 }( abi.encodeWithSelector(lowerCaseSelector) ); if (!success) { (success, data) = address(token).staticcall{ gas: 20000 }( abi.encodeWithSelector(upperCaseSelector) ); } if (success && data.length >= 0x40) { (uint256 offset, uint256 len) = abi.decode(data, (uint256, uint256)); if (offset == 0x20 && len > 0 && data.length == 0x40 + len) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly result := add(data, 0x20) } return result; } } if (success && data.length == 32) { uint256 len = 0; while (len < data.length && data[len] >= 0x20 && data[len] <= 0x7E) { unchecked { len++; } } if (len > 0) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly mstore(data, len) } return string(data); } } return StringUtil.toHex(address(token)); } } // File contracts/routers/GenericRouter.sol pragma solidity 0.8.17; contract GenericRouter is EthReceiver { using UniERC20 for IERC20; using SafeERC20 for IERC20; error ZeroMinReturn(); error ZeroReturnAmount(); uint256 private constant _PARTIAL_FILL = 1 << 0; uint256 private constant _REQUIRES_EXTRA_ETH = 1 << 1; struct SwapDescription { IERC20 srcToken; IERC20 dstToken; address payable srcReceiver; address payable dstReceiver; uint256 amount; uint256 minReturnAmount; uint256 flags; } /// @notice Performs a swap, delegating all calls encoded in `data` to `executor`. See tests for usage examples /// @dev router keeps 1 wei of every token on the contract balance for gas optimisations reasons. This affects first swap of every token by leaving 1 wei on the contract. /// @param executor Aggregation executor that executes calls described in `data` /// @param desc Swap description /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls. /// @param data Encoded calls that `caller` should execute in between of swaps /// @return returnAmount Resulting token amount /// @return spentAmount Source token amount function swap( IAggregationExecutor executor, SwapDescription calldata desc, bytes calldata permit, bytes calldata data ) external payable returns ( uint256 returnAmount, uint256 spentAmount ) { if (desc.minReturnAmount == 0) revert ZeroMinReturn(); IERC20 srcToken = desc.srcToken; IERC20 dstToken = desc.dstToken; bool srcETH = srcToken.isETH(); if (desc.flags & _REQUIRES_EXTRA_ETH != 0) { if (msg.value <= (srcETH ? desc.amount : 0)) revert RouterErrors.InvalidMsgValue(); } else { if (msg.value != (srcETH ? desc.amount : 0)) revert RouterErrors.InvalidMsgValue(); } if (!srcETH) { if (permit.length > 0) { srcToken.safePermit(permit); } srcToken.safeTransferFrom(msg.sender, desc.srcReceiver, desc.amount); } _execute(executor, msg.sender, desc.amount, data); spentAmount = desc.amount; // we leave 1 wei on the router for gas optimisations reasons returnAmount = dstToken.uniBalanceOf(address(this)); if (returnAmount == 0) revert ZeroReturnAmount(); unchecked { returnAmount--; } if (desc.flags & _PARTIAL_FILL != 0) { uint256 unspentAmount = srcToken.uniBalanceOf(address(this)); if (unspentAmount > 1) { // we leave 1 wei on the router for gas optimisations reasons unchecked { unspentAmount--; } spentAmount -= unspentAmount; srcToken.uniTransfer(payable(msg.sender), unspentAmount); } if (returnAmount * desc.amount < desc.minReturnAmount * spentAmount) revert RouterErrors.ReturnAmountIsNotEnough(); } else { if (returnAmount < desc.minReturnAmount) revert RouterErrors.ReturnAmountIsNotEnough(); } address payable dstReceiver = (desc.dstReceiver == address(0)) ? payable(msg.sender) : desc.dstReceiver; dstToken.uniTransfer(dstReceiver, returnAmount); } function _execute( IAggregationExecutor executor, address srcTokenOwner, uint256 inputAmount, bytes calldata data ) private { bytes4 executeSelector = executor.execute.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, executeSelector) mstore(add(ptr, 0x04), srcTokenOwner) calldatacopy(add(ptr, 0x24), data.offset, data.length) mstore(add(add(ptr, 0x24), data.length), inputAmount) if iszero(call(gas(), executor, callvalue(), ptr, add(0x44, data.length), 0, 0)) { returndatacopy(ptr, 0, returndatasize()) revert(ptr, returndatasize()) } } } } // File contracts/routers/UnoswapRouter.sol pragma solidity 0.8.17; contract UnoswapRouter is EthReceiver { using SafeERC20 for IERC20; error ReservesCallFailed(); error SwapAmountTooLarge(); bytes4 private constant _TRANSFER_FROM_CALL_SELECTOR = 0x23b872dd; bytes4 private constant _WETH_DEPOSIT_CALL_SELECTOR = 0xd0e30db0; bytes4 private constant _WETH_WITHDRAW_CALL_SELECTOR = 0x2e1a7d4d; bytes4 private constant _ERC20_TRANSFER_CALL_SELECTOR = 0xa9059cbb; uint256 private constant _ADDRESS_MASK = 0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff; uint256 private constant _REVERSE_MASK = 0x8000000000000000000000000000000000000000000000000000000000000000; uint256 private constant _WETH_MASK = 0x4000000000000000000000000000000000000000000000000000000000000000; uint256 private constant _NUMERATOR_MASK = 0x0000000000000000ffffffff0000000000000000000000000000000000000000; /// @dev WETH address is network-specific and needs to be changed before deployment. /// It can not be moved to immutable as immutables are not supported in assembly address private constant _WETH = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2; bytes4 private constant _UNISWAP_PAIR_RESERVES_CALL_SELECTOR = 0x0902f1ac; bytes4 private constant _UNISWAP_PAIR_SWAP_CALL_SELECTOR = 0x022c0d9f; uint256 private constant _DENOMINATOR = 1e9; uint256 private constant _NUMERATOR_OFFSET = 160; uint256 private constant _MAX_SWAP_AMOUNT = (1 << 112) - 1; // type(uint112).max; /// @notice Same as `unoswapTo` but calls permit first, /// allowing to approve token spending and make a swap in one transaction. /// @param recipient Address that will receive swapped funds /// @param srcToken Source token /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls. /// See tests for examples function unoswapToWithPermit( address payable recipient, IERC20 srcToken, uint256 amount, uint256 minReturn, uint256[] calldata pools, bytes calldata permit ) external returns(uint256 returnAmount) { srcToken.safePermit(permit); return _unoswap(recipient, srcToken, amount, minReturn, pools); } /// @notice Performs swap using Uniswap exchange. Wraps and unwraps ETH if required. /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited /// @param recipient Address that will receive swapped funds /// @param srcToken Source token /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen function unoswapTo( address payable recipient, IERC20 srcToken, uint256 amount, uint256 minReturn, uint256[] calldata pools ) external payable returns(uint256 returnAmount) { return _unoswap(recipient, srcToken, amount, minReturn, pools); } /// @notice Performs swap using Uniswap exchange. Wraps and unwraps ETH if required. /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited /// @param srcToken Source token /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen function unoswap( IERC20 srcToken, uint256 amount, uint256 minReturn, uint256[] calldata pools ) external payable returns(uint256 returnAmount) { return _unoswap(payable(msg.sender), srcToken, amount, minReturn, pools); } function _unoswap( address payable recipient, IERC20 srcToken, uint256 amount, uint256 minReturn, uint256[] calldata pools ) private returns(uint256 returnAmount) { assembly { // solhint-disable-line no-inline-assembly function reRevert() { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } function validateERC20Transfer(status) { if iszero(status) { reRevert() } let success := or( iszero(returndatasize()), // empty return data and(gt(returndatasize(), 31), eq(mload(0), 1)) // true in return data ) if iszero(success) { mstore(0, 0xf27f64e400000000000000000000000000000000000000000000000000000000) // ERC20TransferFailed() revert(0, 4) } } function swap(emptyPtr, swapAmount, pair, reversed, numerator, to) -> ret { mstore(emptyPtr, _UNISWAP_PAIR_RESERVES_CALL_SELECTOR) if iszero(staticcall(gas(), pair, emptyPtr, 0x4, emptyPtr, 0x40)) { reRevert() } if iszero(eq(returndatasize(), 0x60)) { mstore(0, 0x85cd58dc00000000000000000000000000000000000000000000000000000000) // ReservesCallFailed() revert(0, 4) } let reserve0 := mload(emptyPtr) let reserve1 := mload(add(emptyPtr, 0x20)) if reversed { let tmp := reserve0 reserve0 := reserve1 reserve1 := tmp } // this will not overflow as reserve0, reserve1 and ret fit to 112 bit and numerator and _DENOMINATOR fit to 32 bit ret := mul(swapAmount, numerator) ret := div(mul(ret, reserve1), add(ret, mul(reserve0, _DENOMINATOR))) mstore(emptyPtr, _UNISWAP_PAIR_SWAP_CALL_SELECTOR) reversed := iszero(reversed) mstore(add(emptyPtr, 0x04), mul(ret, iszero(reversed))) mstore(add(emptyPtr, 0x24), mul(ret, reversed)) mstore(add(emptyPtr, 0x44), to) mstore(add(emptyPtr, 0x64), 0x80) mstore(add(emptyPtr, 0x84), 0) if iszero(call(gas(), pair, 0, emptyPtr, 0xa4, 0, 0)) { reRevert() } } // make sure that input amount fits in 112 bit if gt(amount, _MAX_SWAP_AMOUNT) { mstore(0, 0xcf0b4d3a00000000000000000000000000000000000000000000000000000000) // SwapAmountTooLarge() revert(0, 4) } let emptyPtr := mload(0x40) mstore(0x40, add(emptyPtr, 0xc0)) let poolsEndOffset := add(pools.offset, shl(5, pools.length)) let rawPair := calldataload(pools.offset) switch srcToken case 0 { if iszero(eq(amount, callvalue())) { mstore(0, 0x1841b4e100000000000000000000000000000000000000000000000000000000) // InvalidMsgValue() revert(0, 4) } mstore(emptyPtr, _WETH_DEPOSIT_CALL_SELECTOR) if iszero(call(gas(), _WETH, amount, emptyPtr, 0x4, 0, 0)) { reRevert() } mstore(emptyPtr, _ERC20_TRANSFER_CALL_SELECTOR) mstore(add(emptyPtr, 0x4), and(rawPair, _ADDRESS_MASK)) mstore(add(emptyPtr, 0x24), amount) if iszero(call(gas(), _WETH, 0, emptyPtr, 0x44, 0, 0)) { reRevert() } } default { if callvalue() { mstore(0, 0x1841b4e100000000000000000000000000000000000000000000000000000000) // InvalidMsgValue() revert(0, 4) } mstore(emptyPtr, _TRANSFER_FROM_CALL_SELECTOR) mstore(add(emptyPtr, 0x4), caller()) mstore(add(emptyPtr, 0x24), and(rawPair, _ADDRESS_MASK)) mstore(add(emptyPtr, 0x44), amount) validateERC20Transfer( call(gas(), srcToken, 0, emptyPtr, 0x64, 0, 0x20) ) } returnAmount := amount for {let i := add(pools.offset, 0x20)} lt(i, poolsEndOffset) {i := add(i, 0x20)} { let nextRawPair := calldataload(i) returnAmount := swap( emptyPtr, returnAmount, and(rawPair, _ADDRESS_MASK), and(rawPair, _REVERSE_MASK), shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)), and(nextRawPair, _ADDRESS_MASK) ) rawPair := nextRawPair } switch and(rawPair, _WETH_MASK) case 0 { returnAmount := swap( emptyPtr, returnAmount, and(rawPair, _ADDRESS_MASK), and(rawPair, _REVERSE_MASK), shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)), recipient ) } default { returnAmount := swap( emptyPtr, returnAmount, and(rawPair, _ADDRESS_MASK), and(rawPair, _REVERSE_MASK), shr(_NUMERATOR_OFFSET, and(rawPair, _NUMERATOR_MASK)), address() ) mstore(emptyPtr, _WETH_WITHDRAW_CALL_SELECTOR) mstore(add(emptyPtr, 0x04), returnAmount) if iszero(call(gas(), _WETH, 0, emptyPtr, 0x24, 0, 0)) { reRevert() } if iszero(call(gas(), recipient, returnAmount, 0, 0, 0, 0)) { reRevert() } } } if (returnAmount < minReturn) revert RouterErrors.ReturnAmountIsNotEnough(); } } // File contracts/interfaces/IUniswapV3Pool.sol pragma solidity 0.8.17; interface IUniswapV3Pool { /// @notice Swap token0 for token1, or token1 for token0 /// @dev The caller of this method receives a callback in the form of IUniswapV3SwapCallback#uniswapV3SwapCallback /// @param recipient The address to receive the output of the swap /// @param zeroForOne The direction of the swap, true for token0 to token1, false for token1 to token0 /// @param amountSpecified The amount of the swap, which implicitly configures the swap as exact input (positive), or exact output (negative) /// @param sqrtPriceLimitX96 The Q64.96 sqrt price limit. If zero for one, the price cannot be less than this /// value after the swap. If one for zero, the price cannot be greater than this value after the swap /// @param data Any data to be passed through to the callback /// @return amount0 The delta of the balance of token0 of the pool, exact when negative, minimum when positive /// @return amount1 The delta of the balance of token1 of the pool, exact when negative, minimum when positive function swap( address recipient, bool zeroForOne, int256 amountSpecified, uint160 sqrtPriceLimitX96, bytes calldata data ) external returns (int256 amount0, int256 amount1); /// @notice The first of the two tokens of the pool, sorted by address /// @return The token contract address function token0() external view returns (address); /// @notice The second of the two tokens of the pool, sorted by address /// @return The token contract address function token1() external view returns (address); /// @notice The pool's fee in hundredths of a bip, i.e. 1e-6 /// @return The fee function fee() external view returns (uint24); } // File contracts/interfaces/IUniswapV3SwapCallback.sol pragma solidity 0.8.17; /// @title Callback for IUniswapV3PoolActions#swap /// @notice Any contract that calls IUniswapV3PoolActions#swap must implement this interface interface IUniswapV3SwapCallback { /// @notice Called to `msg.sender` after executing a swap via IUniswapV3Pool#swap. /// @dev In the implementation you must pay the pool tokens owed for the swap. /// The caller of this method must be checked to be a UniswapV3Pool deployed by the canonical UniswapV3Factory. /// amount0Delta and amount1Delta can both be 0 if no tokens were swapped. /// @param amount0Delta The amount of token0 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token0 to the pool. /// @param amount1Delta The amount of token1 that was sent (negative) or must be received (positive) by the pool by /// the end of the swap. If positive, the callback must send that amount of token1 to the pool. /// @param data Any data passed through by the caller via the IUniswapV3PoolActions#swap call function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata data ) external; } // File @openzeppelin/contracts/utils/[email protected] // OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol) pragma solidity ^0.8.1; /** * @dev Collection of functions related to the address type */ library Address { /** * @dev Returns true if `account` is a contract. * * [IMPORTANT] * ==== * It is unsafe to assume that an address for which this function returns * false is an externally-owned account (EOA) and not a contract. * * Among others, `isContract` will return false for the following * types of addresses: * * - an externally-owned account * - a contract in construction * - an address where a contract will be created * - an address where a contract lived, but was destroyed * ==== * * [IMPORTANT] * ==== * You shouldn't rely on `isContract` to protect against flash loan attacks! * * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract * constructor. * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize/address.code.length, which returns 0 // for contracts in construction, since the code is only stored at the end // of the constructor execution. return account.code.length > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); (bool success, ) = recipient.call{value: amount}(""); require(success, "Address: unable to send value, recipient may have reverted"); } /** * @dev Performs a Solidity function call using a low level `call`. A * plain `call` is an unsafe replacement for a function call: use this * function instead. * * If `target` reverts with a revert reason, it is bubbled up by this * function (like regular Solidity function calls). * * Returns the raw returned data. To convert to the expected return value, * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`]. * * Requirements: * * - `target` must be a contract. * - calling `target` with `data` must not revert. * * _Available since v3.1._ */ function functionCall(address target, bytes memory data) internal returns (bytes memory) { return functionCall(target, data, "Address: low-level call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with * `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { return functionCallWithValue(target, data, 0, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but also transferring `value` wei to `target`. * * Requirements: * * - the calling contract must have an ETH balance of at least `value`. * - the called Solidity function must be `payable`. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value ) internal returns (bytes memory) { return functionCallWithValue(target, data, value, "Address: low-level call with value failed"); } /** * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but * with `errorMessage` as a fallback revert reason when `target` reverts. * * _Available since v3.1._ */ function functionCallWithValue( address target, bytes memory data, uint256 value, string memory errorMessage ) internal returns (bytes memory) { require(address(this).balance >= value, "Address: insufficient balance for call"); require(isContract(target), "Address: call to non-contract"); (bool success, bytes memory returndata) = target.call{value: value}(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) { return functionStaticCall(target, data, "Address: low-level static call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a static call. * * _Available since v3.3._ */ function functionStaticCall( address target, bytes memory data, string memory errorMessage ) internal view returns (bytes memory) { require(isContract(target), "Address: static call to non-contract"); (bool success, bytes memory returndata) = target.staticcall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) { return functionDelegateCall(target, data, "Address: low-level delegate call failed"); } /** * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`], * but performing a delegate call. * * _Available since v3.4._ */ function functionDelegateCall( address target, bytes memory data, string memory errorMessage ) internal returns (bytes memory) { require(isContract(target), "Address: delegate call to non-contract"); (bool success, bytes memory returndata) = target.delegatecall(data); return verifyCallResult(success, returndata, errorMessage); } /** * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the * revert reason using the provided one. * * _Available since v4.3._ */ function verifyCallResult( bool success, bytes memory returndata, string memory errorMessage ) internal pure returns (bytes memory) { if (success) { return returndata; } else { // Look for revert reason and bubble it up if present if (returndata.length > 0) { // The easiest way to bubble the revert reason is using memory via assembly /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } } // File @openzeppelin/contracts/utils/math/[email protected] // OpenZeppelin Contracts (last updated v4.7.0) (utils/math/SafeCast.sol) pragma solidity ^0.8.0; /** * @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow * checks. * * Downcasting from uint256/int256 in Solidity does not revert on overflow. This can * easily result in undesired exploitation or bugs, since developers usually * assume that overflows raise errors. `SafeCast` restores this intuition by * reverting the transaction when such an operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. * * Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing * all math on `uint256` and `int256` and then downcasting. */ library SafeCast { /** * @dev Returns the downcasted uint248 from uint256, reverting on * overflow (when the input is greater than largest uint248). * * Counterpart to Solidity's `uint248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toUint248(uint256 value) internal pure returns (uint248) { require(value <= type(uint248).max, "SafeCast: value doesn't fit in 248 bits"); return uint248(value); } /** * @dev Returns the downcasted uint240 from uint256, reverting on * overflow (when the input is greater than largest uint240). * * Counterpart to Solidity's `uint240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toUint240(uint256 value) internal pure returns (uint240) { require(value <= type(uint240).max, "SafeCast: value doesn't fit in 240 bits"); return uint240(value); } /** * @dev Returns the downcasted uint232 from uint256, reverting on * overflow (when the input is greater than largest uint232). * * Counterpart to Solidity's `uint232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toUint232(uint256 value) internal pure returns (uint232) { require(value <= type(uint232).max, "SafeCast: value doesn't fit in 232 bits"); return uint232(value); } /** * @dev Returns the downcasted uint224 from uint256, reverting on * overflow (when the input is greater than largest uint224). * * Counterpart to Solidity's `uint224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.2._ */ function toUint224(uint256 value) internal pure returns (uint224) { require(value <= type(uint224).max, "SafeCast: value doesn't fit in 224 bits"); return uint224(value); } /** * @dev Returns the downcasted uint216 from uint256, reverting on * overflow (when the input is greater than largest uint216). * * Counterpart to Solidity's `uint216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toUint216(uint256 value) internal pure returns (uint216) { require(value <= type(uint216).max, "SafeCast: value doesn't fit in 216 bits"); return uint216(value); } /** * @dev Returns the downcasted uint208 from uint256, reverting on * overflow (when the input is greater than largest uint208). * * Counterpart to Solidity's `uint208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toUint208(uint256 value) internal pure returns (uint208) { require(value <= type(uint208).max, "SafeCast: value doesn't fit in 208 bits"); return uint208(value); } /** * @dev Returns the downcasted uint200 from uint256, reverting on * overflow (when the input is greater than largest uint200). * * Counterpart to Solidity's `uint200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toUint200(uint256 value) internal pure returns (uint200) { require(value <= type(uint200).max, "SafeCast: value doesn't fit in 200 bits"); return uint200(value); } /** * @dev Returns the downcasted uint192 from uint256, reverting on * overflow (when the input is greater than largest uint192). * * Counterpart to Solidity's `uint192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toUint192(uint256 value) internal pure returns (uint192) { require(value <= type(uint192).max, "SafeCast: value doesn't fit in 192 bits"); return uint192(value); } /** * @dev Returns the downcasted uint184 from uint256, reverting on * overflow (when the input is greater than largest uint184). * * Counterpart to Solidity's `uint184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toUint184(uint256 value) internal pure returns (uint184) { require(value <= type(uint184).max, "SafeCast: value doesn't fit in 184 bits"); return uint184(value); } /** * @dev Returns the downcasted uint176 from uint256, reverting on * overflow (when the input is greater than largest uint176). * * Counterpart to Solidity's `uint176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toUint176(uint256 value) internal pure returns (uint176) { require(value <= type(uint176).max, "SafeCast: value doesn't fit in 176 bits"); return uint176(value); } /** * @dev Returns the downcasted uint168 from uint256, reverting on * overflow (when the input is greater than largest uint168). * * Counterpart to Solidity's `uint168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toUint168(uint256 value) internal pure returns (uint168) { require(value <= type(uint168).max, "SafeCast: value doesn't fit in 168 bits"); return uint168(value); } /** * @dev Returns the downcasted uint160 from uint256, reverting on * overflow (when the input is greater than largest uint160). * * Counterpart to Solidity's `uint160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toUint160(uint256 value) internal pure returns (uint160) { require(value <= type(uint160).max, "SafeCast: value doesn't fit in 160 bits"); return uint160(value); } /** * @dev Returns the downcasted uint152 from uint256, reverting on * overflow (when the input is greater than largest uint152). * * Counterpart to Solidity's `uint152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toUint152(uint256 value) internal pure returns (uint152) { require(value <= type(uint152).max, "SafeCast: value doesn't fit in 152 bits"); return uint152(value); } /** * @dev Returns the downcasted uint144 from uint256, reverting on * overflow (when the input is greater than largest uint144). * * Counterpart to Solidity's `uint144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toUint144(uint256 value) internal pure returns (uint144) { require(value <= type(uint144).max, "SafeCast: value doesn't fit in 144 bits"); return uint144(value); } /** * @dev Returns the downcasted uint136 from uint256, reverting on * overflow (when the input is greater than largest uint136). * * Counterpart to Solidity's `uint136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toUint136(uint256 value) internal pure returns (uint136) { require(value <= type(uint136).max, "SafeCast: value doesn't fit in 136 bits"); return uint136(value); } /** * @dev Returns the downcasted uint128 from uint256, reverting on * overflow (when the input is greater than largest uint128). * * Counterpart to Solidity's `uint128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v2.5._ */ function toUint128(uint256 value) internal pure returns (uint128) { require(value <= type(uint128).max, "SafeCast: value doesn't fit in 128 bits"); return uint128(value); } /** * @dev Returns the downcasted uint120 from uint256, reverting on * overflow (when the input is greater than largest uint120). * * Counterpart to Solidity's `uint120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toUint120(uint256 value) internal pure returns (uint120) { require(value <= type(uint120).max, "SafeCast: value doesn't fit in 120 bits"); return uint120(value); } /** * @dev Returns the downcasted uint112 from uint256, reverting on * overflow (when the input is greater than largest uint112). * * Counterpart to Solidity's `uint112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toUint112(uint256 value) internal pure returns (uint112) { require(value <= type(uint112).max, "SafeCast: value doesn't fit in 112 bits"); return uint112(value); } /** * @dev Returns the downcasted uint104 from uint256, reverting on * overflow (when the input is greater than largest uint104). * * Counterpart to Solidity's `uint104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toUint104(uint256 value) internal pure returns (uint104) { require(value <= type(uint104).max, "SafeCast: value doesn't fit in 104 bits"); return uint104(value); } /** * @dev Returns the downcasted uint96 from uint256, reverting on * overflow (when the input is greater than largest uint96). * * Counterpart to Solidity's `uint96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.2._ */ function toUint96(uint256 value) internal pure returns (uint96) { require(value <= type(uint96).max, "SafeCast: value doesn't fit in 96 bits"); return uint96(value); } /** * @dev Returns the downcasted uint88 from uint256, reverting on * overflow (when the input is greater than largest uint88). * * Counterpart to Solidity's `uint88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toUint88(uint256 value) internal pure returns (uint88) { require(value <= type(uint88).max, "SafeCast: value doesn't fit in 88 bits"); return uint88(value); } /** * @dev Returns the downcasted uint80 from uint256, reverting on * overflow (when the input is greater than largest uint80). * * Counterpart to Solidity's `uint80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toUint80(uint256 value) internal pure returns (uint80) { require(value <= type(uint80).max, "SafeCast: value doesn't fit in 80 bits"); return uint80(value); } /** * @dev Returns the downcasted uint72 from uint256, reverting on * overflow (when the input is greater than largest uint72). * * Counterpart to Solidity's `uint72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toUint72(uint256 value) internal pure returns (uint72) { require(value <= type(uint72).max, "SafeCast: value doesn't fit in 72 bits"); return uint72(value); } /** * @dev Returns the downcasted uint64 from uint256, reverting on * overflow (when the input is greater than largest uint64). * * Counterpart to Solidity's `uint64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v2.5._ */ function toUint64(uint256 value) internal pure returns (uint64) { require(value <= type(uint64).max, "SafeCast: value doesn't fit in 64 bits"); return uint64(value); } /** * @dev Returns the downcasted uint56 from uint256, reverting on * overflow (when the input is greater than largest uint56). * * Counterpart to Solidity's `uint56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toUint56(uint256 value) internal pure returns (uint56) { require(value <= type(uint56).max, "SafeCast: value doesn't fit in 56 bits"); return uint56(value); } /** * @dev Returns the downcasted uint48 from uint256, reverting on * overflow (when the input is greater than largest uint48). * * Counterpart to Solidity's `uint48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toUint48(uint256 value) internal pure returns (uint48) { require(value <= type(uint48).max, "SafeCast: value doesn't fit in 48 bits"); return uint48(value); } /** * @dev Returns the downcasted uint40 from uint256, reverting on * overflow (when the input is greater than largest uint40). * * Counterpart to Solidity's `uint40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toUint40(uint256 value) internal pure returns (uint40) { require(value <= type(uint40).max, "SafeCast: value doesn't fit in 40 bits"); return uint40(value); } /** * @dev Returns the downcasted uint32 from uint256, reverting on * overflow (when the input is greater than largest uint32). * * Counterpart to Solidity's `uint32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v2.5._ */ function toUint32(uint256 value) internal pure returns (uint32) { require(value <= type(uint32).max, "SafeCast: value doesn't fit in 32 bits"); return uint32(value); } /** * @dev Returns the downcasted uint24 from uint256, reverting on * overflow (when the input is greater than largest uint24). * * Counterpart to Solidity's `uint24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toUint24(uint256 value) internal pure returns (uint24) { require(value <= type(uint24).max, "SafeCast: value doesn't fit in 24 bits"); return uint24(value); } /** * @dev Returns the downcasted uint16 from uint256, reverting on * overflow (when the input is greater than largest uint16). * * Counterpart to Solidity's `uint16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v2.5._ */ function toUint16(uint256 value) internal pure returns (uint16) { require(value <= type(uint16).max, "SafeCast: value doesn't fit in 16 bits"); return uint16(value); } /** * @dev Returns the downcasted uint8 from uint256, reverting on * overflow (when the input is greater than largest uint8). * * Counterpart to Solidity's `uint8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v2.5._ */ function toUint8(uint256 value) internal pure returns (uint8) { require(value <= type(uint8).max, "SafeCast: value doesn't fit in 8 bits"); return uint8(value); } /** * @dev Converts a signed int256 into an unsigned uint256. * * Requirements: * * - input must be greater than or equal to 0. * * _Available since v3.0._ */ function toUint256(int256 value) internal pure returns (uint256) { require(value >= 0, "SafeCast: value must be positive"); return uint256(value); } /** * @dev Returns the downcasted int248 from int256, reverting on * overflow (when the input is less than smallest int248 or * greater than largest int248). * * Counterpart to Solidity's `int248` operator. * * Requirements: * * - input must fit into 248 bits * * _Available since v4.7._ */ function toInt248(int256 value) internal pure returns (int248) { require(value >= type(int248).min && value <= type(int248).max, "SafeCast: value doesn't fit in 248 bits"); return int248(value); } /** * @dev Returns the downcasted int240 from int256, reverting on * overflow (when the input is less than smallest int240 or * greater than largest int240). * * Counterpart to Solidity's `int240` operator. * * Requirements: * * - input must fit into 240 bits * * _Available since v4.7._ */ function toInt240(int256 value) internal pure returns (int240) { require(value >= type(int240).min && value <= type(int240).max, "SafeCast: value doesn't fit in 240 bits"); return int240(value); } /** * @dev Returns the downcasted int232 from int256, reverting on * overflow (when the input is less than smallest int232 or * greater than largest int232). * * Counterpart to Solidity's `int232` operator. * * Requirements: * * - input must fit into 232 bits * * _Available since v4.7._ */ function toInt232(int256 value) internal pure returns (int232) { require(value >= type(int232).min && value <= type(int232).max, "SafeCast: value doesn't fit in 232 bits"); return int232(value); } /** * @dev Returns the downcasted int224 from int256, reverting on * overflow (when the input is less than smallest int224 or * greater than largest int224). * * Counterpart to Solidity's `int224` operator. * * Requirements: * * - input must fit into 224 bits * * _Available since v4.7._ */ function toInt224(int256 value) internal pure returns (int224) { require(value >= type(int224).min && value <= type(int224).max, "SafeCast: value doesn't fit in 224 bits"); return int224(value); } /** * @dev Returns the downcasted int216 from int256, reverting on * overflow (when the input is less than smallest int216 or * greater than largest int216). * * Counterpart to Solidity's `int216` operator. * * Requirements: * * - input must fit into 216 bits * * _Available since v4.7._ */ function toInt216(int256 value) internal pure returns (int216) { require(value >= type(int216).min && value <= type(int216).max, "SafeCast: value doesn't fit in 216 bits"); return int216(value); } /** * @dev Returns the downcasted int208 from int256, reverting on * overflow (when the input is less than smallest int208 or * greater than largest int208). * * Counterpart to Solidity's `int208` operator. * * Requirements: * * - input must fit into 208 bits * * _Available since v4.7._ */ function toInt208(int256 value) internal pure returns (int208) { require(value >= type(int208).min && value <= type(int208).max, "SafeCast: value doesn't fit in 208 bits"); return int208(value); } /** * @dev Returns the downcasted int200 from int256, reverting on * overflow (when the input is less than smallest int200 or * greater than largest int200). * * Counterpart to Solidity's `int200` operator. * * Requirements: * * - input must fit into 200 bits * * _Available since v4.7._ */ function toInt200(int256 value) internal pure returns (int200) { require(value >= type(int200).min && value <= type(int200).max, "SafeCast: value doesn't fit in 200 bits"); return int200(value); } /** * @dev Returns the downcasted int192 from int256, reverting on * overflow (when the input is less than smallest int192 or * greater than largest int192). * * Counterpart to Solidity's `int192` operator. * * Requirements: * * - input must fit into 192 bits * * _Available since v4.7._ */ function toInt192(int256 value) internal pure returns (int192) { require(value >= type(int192).min && value <= type(int192).max, "SafeCast: value doesn't fit in 192 bits"); return int192(value); } /** * @dev Returns the downcasted int184 from int256, reverting on * overflow (when the input is less than smallest int184 or * greater than largest int184). * * Counterpart to Solidity's `int184` operator. * * Requirements: * * - input must fit into 184 bits * * _Available since v4.7._ */ function toInt184(int256 value) internal pure returns (int184) { require(value >= type(int184).min && value <= type(int184).max, "SafeCast: value doesn't fit in 184 bits"); return int184(value); } /** * @dev Returns the downcasted int176 from int256, reverting on * overflow (when the input is less than smallest int176 or * greater than largest int176). * * Counterpart to Solidity's `int176` operator. * * Requirements: * * - input must fit into 176 bits * * _Available since v4.7._ */ function toInt176(int256 value) internal pure returns (int176) { require(value >= type(int176).min && value <= type(int176).max, "SafeCast: value doesn't fit in 176 bits"); return int176(value); } /** * @dev Returns the downcasted int168 from int256, reverting on * overflow (when the input is less than smallest int168 or * greater than largest int168). * * Counterpart to Solidity's `int168` operator. * * Requirements: * * - input must fit into 168 bits * * _Available since v4.7._ */ function toInt168(int256 value) internal pure returns (int168) { require(value >= type(int168).min && value <= type(int168).max, "SafeCast: value doesn't fit in 168 bits"); return int168(value); } /** * @dev Returns the downcasted int160 from int256, reverting on * overflow (when the input is less than smallest int160 or * greater than largest int160). * * Counterpart to Solidity's `int160` operator. * * Requirements: * * - input must fit into 160 bits * * _Available since v4.7._ */ function toInt160(int256 value) internal pure returns (int160) { require(value >= type(int160).min && value <= type(int160).max, "SafeCast: value doesn't fit in 160 bits"); return int160(value); } /** * @dev Returns the downcasted int152 from int256, reverting on * overflow (when the input is less than smallest int152 or * greater than largest int152). * * Counterpart to Solidity's `int152` operator. * * Requirements: * * - input must fit into 152 bits * * _Available since v4.7._ */ function toInt152(int256 value) internal pure returns (int152) { require(value >= type(int152).min && value <= type(int152).max, "SafeCast: value doesn't fit in 152 bits"); return int152(value); } /** * @dev Returns the downcasted int144 from int256, reverting on * overflow (when the input is less than smallest int144 or * greater than largest int144). * * Counterpart to Solidity's `int144` operator. * * Requirements: * * - input must fit into 144 bits * * _Available since v4.7._ */ function toInt144(int256 value) internal pure returns (int144) { require(value >= type(int144).min && value <= type(int144).max, "SafeCast: value doesn't fit in 144 bits"); return int144(value); } /** * @dev Returns the downcasted int136 from int256, reverting on * overflow (when the input is less than smallest int136 or * greater than largest int136). * * Counterpart to Solidity's `int136` operator. * * Requirements: * * - input must fit into 136 bits * * _Available since v4.7._ */ function toInt136(int256 value) internal pure returns (int136) { require(value >= type(int136).min && value <= type(int136).max, "SafeCast: value doesn't fit in 136 bits"); return int136(value); } /** * @dev Returns the downcasted int128 from int256, reverting on * overflow (when the input is less than smallest int128 or * greater than largest int128). * * Counterpart to Solidity's `int128` operator. * * Requirements: * * - input must fit into 128 bits * * _Available since v3.1._ */ function toInt128(int256 value) internal pure returns (int128) { require(value >= type(int128).min && value <= type(int128).max, "SafeCast: value doesn't fit in 128 bits"); return int128(value); } /** * @dev Returns the downcasted int120 from int256, reverting on * overflow (when the input is less than smallest int120 or * greater than largest int120). * * Counterpart to Solidity's `int120` operator. * * Requirements: * * - input must fit into 120 bits * * _Available since v4.7._ */ function toInt120(int256 value) internal pure returns (int120) { require(value >= type(int120).min && value <= type(int120).max, "SafeCast: value doesn't fit in 120 bits"); return int120(value); } /** * @dev Returns the downcasted int112 from int256, reverting on * overflow (when the input is less than smallest int112 or * greater than largest int112). * * Counterpart to Solidity's `int112` operator. * * Requirements: * * - input must fit into 112 bits * * _Available since v4.7._ */ function toInt112(int256 value) internal pure returns (int112) { require(value >= type(int112).min && value <= type(int112).max, "SafeCast: value doesn't fit in 112 bits"); return int112(value); } /** * @dev Returns the downcasted int104 from int256, reverting on * overflow (when the input is less than smallest int104 or * greater than largest int104). * * Counterpart to Solidity's `int104` operator. * * Requirements: * * - input must fit into 104 bits * * _Available since v4.7._ */ function toInt104(int256 value) internal pure returns (int104) { require(value >= type(int104).min && value <= type(int104).max, "SafeCast: value doesn't fit in 104 bits"); return int104(value); } /** * @dev Returns the downcasted int96 from int256, reverting on * overflow (when the input is less than smallest int96 or * greater than largest int96). * * Counterpart to Solidity's `int96` operator. * * Requirements: * * - input must fit into 96 bits * * _Available since v4.7._ */ function toInt96(int256 value) internal pure returns (int96) { require(value >= type(int96).min && value <= type(int96).max, "SafeCast: value doesn't fit in 96 bits"); return int96(value); } /** * @dev Returns the downcasted int88 from int256, reverting on * overflow (when the input is less than smallest int88 or * greater than largest int88). * * Counterpart to Solidity's `int88` operator. * * Requirements: * * - input must fit into 88 bits * * _Available since v4.7._ */ function toInt88(int256 value) internal pure returns (int88) { require(value >= type(int88).min && value <= type(int88).max, "SafeCast: value doesn't fit in 88 bits"); return int88(value); } /** * @dev Returns the downcasted int80 from int256, reverting on * overflow (when the input is less than smallest int80 or * greater than largest int80). * * Counterpart to Solidity's `int80` operator. * * Requirements: * * - input must fit into 80 bits * * _Available since v4.7._ */ function toInt80(int256 value) internal pure returns (int80) { require(value >= type(int80).min && value <= type(int80).max, "SafeCast: value doesn't fit in 80 bits"); return int80(value); } /** * @dev Returns the downcasted int72 from int256, reverting on * overflow (when the input is less than smallest int72 or * greater than largest int72). * * Counterpart to Solidity's `int72` operator. * * Requirements: * * - input must fit into 72 bits * * _Available since v4.7._ */ function toInt72(int256 value) internal pure returns (int72) { require(value >= type(int72).min && value <= type(int72).max, "SafeCast: value doesn't fit in 72 bits"); return int72(value); } /** * @dev Returns the downcasted int64 from int256, reverting on * overflow (when the input is less than smallest int64 or * greater than largest int64). * * Counterpart to Solidity's `int64` operator. * * Requirements: * * - input must fit into 64 bits * * _Available since v3.1._ */ function toInt64(int256 value) internal pure returns (int64) { require(value >= type(int64).min && value <= type(int64).max, "SafeCast: value doesn't fit in 64 bits"); return int64(value); } /** * @dev Returns the downcasted int56 from int256, reverting on * overflow (when the input is less than smallest int56 or * greater than largest int56). * * Counterpart to Solidity's `int56` operator. * * Requirements: * * - input must fit into 56 bits * * _Available since v4.7._ */ function toInt56(int256 value) internal pure returns (int56) { require(value >= type(int56).min && value <= type(int56).max, "SafeCast: value doesn't fit in 56 bits"); return int56(value); } /** * @dev Returns the downcasted int48 from int256, reverting on * overflow (when the input is less than smallest int48 or * greater than largest int48). * * Counterpart to Solidity's `int48` operator. * * Requirements: * * - input must fit into 48 bits * * _Available since v4.7._ */ function toInt48(int256 value) internal pure returns (int48) { require(value >= type(int48).min && value <= type(int48).max, "SafeCast: value doesn't fit in 48 bits"); return int48(value); } /** * @dev Returns the downcasted int40 from int256, reverting on * overflow (when the input is less than smallest int40 or * greater than largest int40). * * Counterpart to Solidity's `int40` operator. * * Requirements: * * - input must fit into 40 bits * * _Available since v4.7._ */ function toInt40(int256 value) internal pure returns (int40) { require(value >= type(int40).min && value <= type(int40).max, "SafeCast: value doesn't fit in 40 bits"); return int40(value); } /** * @dev Returns the downcasted int32 from int256, reverting on * overflow (when the input is less than smallest int32 or * greater than largest int32). * * Counterpart to Solidity's `int32` operator. * * Requirements: * * - input must fit into 32 bits * * _Available since v3.1._ */ function toInt32(int256 value) internal pure returns (int32) { require(value >= type(int32).min && value <= type(int32).max, "SafeCast: value doesn't fit in 32 bits"); return int32(value); } /** * @dev Returns the downcasted int24 from int256, reverting on * overflow (when the input is less than smallest int24 or * greater than largest int24). * * Counterpart to Solidity's `int24` operator. * * Requirements: * * - input must fit into 24 bits * * _Available since v4.7._ */ function toInt24(int256 value) internal pure returns (int24) { require(value >= type(int24).min && value <= type(int24).max, "SafeCast: value doesn't fit in 24 bits"); return int24(value); } /** * @dev Returns the downcasted int16 from int256, reverting on * overflow (when the input is less than smallest int16 or * greater than largest int16). * * Counterpart to Solidity's `int16` operator. * * Requirements: * * - input must fit into 16 bits * * _Available since v3.1._ */ function toInt16(int256 value) internal pure returns (int16) { require(value >= type(int16).min && value <= type(int16).max, "SafeCast: value doesn't fit in 16 bits"); return int16(value); } /** * @dev Returns the downcasted int8 from int256, reverting on * overflow (when the input is less than smallest int8 or * greater than largest int8). * * Counterpart to Solidity's `int8` operator. * * Requirements: * * - input must fit into 8 bits * * _Available since v3.1._ */ function toInt8(int256 value) internal pure returns (int8) { require(value >= type(int8).min && value <= type(int8).max, "SafeCast: value doesn't fit in 8 bits"); return int8(value); } /** * @dev Converts an unsigned uint256 into a signed int256. * * Requirements: * * - input must be less than or equal to maxInt256. * * _Available since v3.0._ */ function toInt256(uint256 value) internal pure returns (int256) { // Note: Unsafe cast below is okay because `type(int256).max` is guaranteed to be positive require(value <= uint256(type(int256).max), "SafeCast: value doesn't fit in an int256"); return int256(value); } } // File contracts/routers/UnoswapV3Router.sol pragma solidity 0.8.17; contract UnoswapV3Router is EthReceiver, IUniswapV3SwapCallback { using Address for address payable; using SafeERC20 for IERC20; error EmptyPools(); error BadPool(); uint256 private constant _ONE_FOR_ZERO_MASK = 1 << 255; uint256 private constant _WETH_UNWRAP_MASK = 1 << 253; bytes32 private constant _POOL_INIT_CODE_HASH = 0xe34f199b19b2b4f47f68442619d555527d244f78a3297ea89325f843f87b8b54; bytes32 private constant _FF_FACTORY = 0xff1F98431c8aD98523631AE4a59f267346ea31F9840000000000000000000000; // concatenation of token0(), token1() fee(), transfer() and transferFrom() selectors bytes32 private constant _SELECTORS = 0x0dfe1681d21220a7ddca3f43a9059cbb23b872dd000000000000000000000000; uint256 private constant _ADDRESS_MASK = 0x000000000000000000000000ffffffffffffffffffffffffffffffffffffffff; /// @dev The minimum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MIN_TICK) uint160 private constant _MIN_SQRT_RATIO = 4295128739 + 1; /// @dev The maximum value that can be returned from #getSqrtRatioAtTick. Equivalent to getSqrtRatioAtTick(MAX_TICK) uint160 private constant _MAX_SQRT_RATIO = 1461446703485210103287273052203988822378723970342 - 1; IWETH private immutable _WETH; // solhint-disable-line var-name-mixedcase constructor(IWETH weth) { _WETH = weth; } /// @notice Same as `uniswapV3SwapTo` but calls permit first, /// allowing to approve token spending and make a swap in one transaction. /// @param recipient Address that will receive swap funds /// @param srcToken Source token /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen /// @param permit Should contain valid permit that can be used in `IERC20Permit.permit` calls. /// See tests for examples function uniswapV3SwapToWithPermit( address payable recipient, IERC20 srcToken, uint256 amount, uint256 minReturn, uint256[] calldata pools, bytes calldata permit ) external returns(uint256 returnAmount) { srcToken.safePermit(permit); return _uniswapV3Swap(recipient, amount, minReturn, pools); } /// @notice Same as `uniswapV3SwapTo` but uses `msg.sender` as recipient /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen function uniswapV3Swap( uint256 amount, uint256 minReturn, uint256[] calldata pools ) external payable returns(uint256 returnAmount) { return _uniswapV3Swap(payable(msg.sender), amount, minReturn, pools); } /// @notice Performs swap using Uniswap V3 exchange. Wraps and unwraps ETH if required. /// Sending non-zero `msg.value` for anything but ETH swaps is prohibited /// @param recipient Address that will receive swap funds /// @param amount Amount of source tokens to swap /// @param minReturn Minimal allowed returnAmount to make transaction commit /// @param pools Pools chain used for swaps. Pools src and dst tokens should match to make swap happen function uniswapV3SwapTo( address payable recipient, uint256 amount, uint256 minReturn, uint256[] calldata pools ) external payable returns(uint256 returnAmount) { return _uniswapV3Swap(recipient, amount, minReturn, pools); } function _uniswapV3Swap( address payable recipient, uint256 amount, uint256 minReturn, uint256[] calldata pools ) private returns(uint256 returnAmount) { unchecked { uint256 len = pools.length; if (len == 0) revert EmptyPools(); uint256 lastIndex = len - 1; returnAmount = amount; bool wrapWeth = msg.value > 0; bool unwrapWeth = pools[lastIndex] & _WETH_UNWRAP_MASK > 0; if (wrapWeth) { if (msg.value != amount) revert RouterErrors.InvalidMsgValue(); _WETH.deposit{value: amount}(); } if (len > 1) { returnAmount = _makeSwap(address(this), wrapWeth ? address(this) : msg.sender, pools[0], returnAmount); for (uint256 i = 1; i < lastIndex; i++) { returnAmount = _makeSwap(address(this), address(this), pools[i], returnAmount); } returnAmount = _makeSwap(unwrapWeth ? address(this) : recipient, address(this), pools[lastIndex], returnAmount); } else { returnAmount = _makeSwap(unwrapWeth ? address(this) : recipient, wrapWeth ? address(this) : msg.sender, pools[0], returnAmount); } if (returnAmount < minReturn) revert RouterErrors.ReturnAmountIsNotEnough(); if (unwrapWeth) { _WETH.withdraw(returnAmount); recipient.sendValue(returnAmount); } } } /// @inheritdoc IUniswapV3SwapCallback function uniswapV3SwapCallback( int256 amount0Delta, int256 amount1Delta, bytes calldata /* data */ ) external override { assembly { // solhint-disable-line no-inline-assembly function reRevert() { returndatacopy(0, 0, returndatasize()) revert(0, returndatasize()) } function validateERC20Transfer(status) { if iszero(status) { reRevert() } let success := or( iszero(returndatasize()), // empty return data and(gt(returndatasize(), 31), eq(mload(0), 1)) // true in return data ) if iszero(success) { mstore(0, 0xf27f64e400000000000000000000000000000000000000000000000000000000) // ERC20TransferFailed() revert(0, 4) } } let emptyPtr := mload(0x40) let resultPtr := add(emptyPtr, 0x15) // 0x15 = _FF_FACTORY size mstore(emptyPtr, _SELECTORS) if iszero(staticcall(gas(), caller(), emptyPtr, 0x4, resultPtr, 0x20)) { reRevert() } if iszero(staticcall(gas(), caller(), add(emptyPtr, 0x4), 0x4, add(resultPtr, 0x20), 0x20)) { reRevert() } if iszero(staticcall(gas(), caller(), add(emptyPtr, 0x8), 0x4, add(resultPtr, 0x40), 0x20)) { reRevert() } let token let amount switch sgt(amount0Delta, 0) case 1 { token := mload(resultPtr) amount := amount0Delta } default { token := mload(add(resultPtr, 0x20)) amount := amount1Delta } mstore(emptyPtr, _FF_FACTORY) mstore(resultPtr, keccak256(resultPtr, 0x60)) // Compute the inner hash in-place mstore(add(resultPtr, 0x20), _POOL_INIT_CODE_HASH) let pool := and(keccak256(emptyPtr, 0x55), _ADDRESS_MASK) if xor(pool, caller()) { mstore(0, 0xb2c0272200000000000000000000000000000000000000000000000000000000) // BadPool() revert(0, 4) } let payer := calldataload(0x84) mstore(emptyPtr, _SELECTORS) switch eq(payer, address()) case 1 { // token.safeTransfer(msg.sender,amount) mstore(add(emptyPtr, 0x10), caller()) mstore(add(emptyPtr, 0x30), amount) validateERC20Transfer( call(gas(), token, 0, add(emptyPtr, 0x0c), 0x44, 0, 0x20) ) } default { // token.safeTransferFrom(payer, msg.sender, amount); mstore(add(emptyPtr, 0x14), payer) mstore(add(emptyPtr, 0x34), caller()) mstore(add(emptyPtr, 0x54), amount) validateERC20Transfer( call(gas(), token, 0, add(emptyPtr, 0x10), 0x64, 0, 0x20) ) } } } function _makeSwap(address recipient, address payer, uint256 pool, uint256 amount) private returns (uint256) { bool zeroForOne = pool & _ONE_FOR_ZERO_MASK == 0; if (zeroForOne) { (, int256 amount1) = IUniswapV3Pool(address(uint160(pool))).swap( recipient, zeroForOne, SafeCast.toInt256(amount), _MIN_SQRT_RATIO, abi.encode(payer) ); return SafeCast.toUint256(-amount1); } else { (int256 amount0,) = IUniswapV3Pool(address(uint160(pool))).swap( recipient, zeroForOne, SafeCast.toInt256(amount), _MAX_SQRT_RATIO, abi.encode(payer) ); return SafeCast.toUint256(-amount0); } } } // File @1inch/solidity-utils/contracts/[email protected] pragma solidity ^0.8.0; abstract contract OnlyWethReceiver is EthReceiver { address private immutable _WETH; // solhint-disable-line var-name-mixedcase constructor(address weth) { _WETH = address(weth); } function _receive() internal virtual override { if (msg.sender != _WETH) revert EthDepositRejected(); } } // File @openzeppelin/contracts/interfaces/[email protected] // OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. * * _Available since v4.1._ */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); } // File @1inch/solidity-utils/contracts/libraries/[email protected] pragma solidity ^0.8.0; library ECDSA { // EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature // unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines // the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most // signatures from current libraries generate a unique signature with an s-value in the lower half order. // // If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value // with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or // vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept // these malleable signatures as well. uint256 private constant _S_BOUNDARY = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0 + 1; uint256 private constant _COMPACT_S_MASK = 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff; uint256 private constant _COMPACT_V_SHIFT = 255; function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(address signer) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly if lt(s, _S_BOUNDARY) { let ptr := mload(0x40) mstore(ptr, hash) mstore(add(ptr, 0x20), v) mstore(add(ptr, 0x40), r) mstore(add(ptr, 0x60), s) mstore(0, 0) pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20)) signer := mload(0) } } } function recover(bytes32 hash, bytes32 r, bytes32 vs) internal view returns(address signer) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let s := and(vs, _COMPACT_S_MASK) if lt(s, _S_BOUNDARY) { let ptr := mload(0x40) mstore(ptr, hash) mstore(add(ptr, 0x20), add(27, shr(_COMPACT_V_SHIFT, vs))) mstore(add(ptr, 0x40), r) mstore(add(ptr, 0x60), s) mstore(0, 0) pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20)) signer := mload(0) } } } /// WARNING!!! /// There is a known signature malleability issue with two representations of signatures! /// Even though this function is able to verify both standard 65-byte and compact 64-byte EIP-2098 signatures /// one should never use raw signatures for any kind of invalidation logic in their code. /// As the standard and compact representations are interchangeable any invalidation logic that relies on /// signature uniqueness will get rekt. /// More info: https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-4h98-2769-gh6h function recover(bytes32 hash, bytes calldata signature) internal view returns(address signer) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) // memory[ptr:ptr+0x80] = (hash, v, r, s) switch signature.length case 65 { // memory[ptr+0x20:ptr+0x80] = (v, r, s) mstore(add(ptr, 0x20), byte(0, calldataload(add(signature.offset, 0x40)))) calldatacopy(add(ptr, 0x40), signature.offset, 0x40) } case 64 { // memory[ptr+0x20:ptr+0x80] = (v, r, s) let vs := calldataload(add(signature.offset, 0x20)) mstore(add(ptr, 0x20), add(27, shr(_COMPACT_V_SHIFT, vs))) calldatacopy(add(ptr, 0x40), signature.offset, 0x20) mstore(add(ptr, 0x60), and(vs, _COMPACT_S_MASK)) } default { ptr := 0 } if ptr { if lt(mload(add(ptr, 0x60)), _S_BOUNDARY) { // memory[ptr:ptr+0x20] = (hash) mstore(ptr, hash) mstore(0, 0) pop(staticcall(gas(), 0x1, ptr, 0x80, 0, 0x20)) signer := mload(0) } } } } function recoverOrIsValidSignature(address signer, bytes32 hash, bytes calldata signature) internal view returns(bool success) { if (signer == address(0)) return false; if ((signature.length == 64 || signature.length == 65) && recover(hash, signature) == signer) { return true; } return isValidSignature(signer, hash, signature); } function recoverOrIsValidSignature(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(bool success) { if (signer == address(0)) return false; if (recover(hash, v, r, s) == signer) { return true; } return isValidSignature(signer, hash, v, r, s); } function recoverOrIsValidSignature(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) { if (signer == address(0)) return false; if (recover(hash, r, vs) == signer) { return true; } return isValidSignature(signer, hash, r, vs); } function recoverOrIsValidSignature65(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) { if (signer == address(0)) return false; if (recover(hash, r, vs) == signer) { return true; } return isValidSignature65(signer, hash, r, vs); } function isValidSignature(address signer, bytes32 hash, bytes calldata signature) internal view returns(bool success) { // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, signature)); // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector; bytes4 selector = IERC1271.isValidSignature.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), hash) mstore(add(ptr, 0x24), 0x40) mstore(add(ptr, 0x44), signature.length) calldatacopy(add(ptr, 0x64), signature.offset, signature.length) if staticcall(gas(), signer, ptr, add(0x64, signature.length), 0, 0x20) { success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20)) } } } function isValidSignature(address signer, bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal view returns(bool success) { bytes4 selector = IERC1271.isValidSignature.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), hash) mstore(add(ptr, 0x24), 0x40) mstore(add(ptr, 0x44), 65) mstore(add(ptr, 0x64), r) mstore(add(ptr, 0x84), s) mstore8(add(ptr, 0xa4), v) if staticcall(gas(), signer, ptr, 0xa5, 0, 0x20) { success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20)) } } } function isValidSignature(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) { // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, abi.encodePacked(r, vs))); // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector; bytes4 selector = IERC1271.isValidSignature.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), hash) mstore(add(ptr, 0x24), 0x40) mstore(add(ptr, 0x44), 64) mstore(add(ptr, 0x64), r) mstore(add(ptr, 0x84), vs) if staticcall(gas(), signer, ptr, 0xa4, 0, 0x20) { success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20)) } } } function isValidSignature65(address signer, bytes32 hash, bytes32 r, bytes32 vs) internal view returns(bool success) { // (bool success, bytes memory data) = signer.staticcall(abi.encodeWithSelector(IERC1271.isValidSignature.selector, hash, abi.encodePacked(r, vs & ~uint256(1 << 255), uint8(vs >> 255)))); // return success && data.length >= 4 && abi.decode(data, (bytes4)) == IERC1271.isValidSignature.selector; bytes4 selector = IERC1271.isValidSignature.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, selector) mstore(add(ptr, 0x04), hash) mstore(add(ptr, 0x24), 0x40) mstore(add(ptr, 0x44), 65) mstore(add(ptr, 0x64), r) mstore(add(ptr, 0x84), and(vs, _COMPACT_S_MASK)) mstore8(add(ptr, 0xa4), add(27, shr(_COMPACT_V_SHIFT, vs))) if staticcall(gas(), signer, ptr, 0xa5, 0, 0x20) { success := and(eq(selector, mload(0)), eq(returndatasize(), 0x20)) } } } function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32 res) { // 32 is the length in bytes of hash, enforced by the type signature above // return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)); /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly mstore(0, 0x19457468657265756d205369676e6564204d6573736167653a0a333200000000) // "\x19Ethereum Signed Message:\n32" mstore(28, hash) res := keccak256(0, 60) } } function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32 res) { // return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash)); /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) mstore(ptr, 0x1901000000000000000000000000000000000000000000000000000000000000) // "\x19\x01" mstore(add(ptr, 0x02), domainSeparator) mstore(add(ptr, 0x22), structHash) res := keccak256(ptr, 66) } } } // File @1inch/limit-order-protocol/contracts/[email protected] pragma solidity 0.8.17; library OrderRFQLib { struct OrderRFQ { uint256 info; // lowest 64 bits is the order id, next 64 bits is the expiration timestamp address makerAsset; address takerAsset; address maker; address allowedSender; // equals to Zero address on public orders uint256 makingAmount; uint256 takingAmount; } bytes32 constant internal _LIMIT_ORDER_RFQ_TYPEHASH = keccak256( "OrderRFQ(" "uint256 info," "address makerAsset," "address takerAsset," "address maker," "address allowedSender," "uint256 makingAmount," "uint256 takingAmount" ")" ); function hash(OrderRFQ memory order, bytes32 domainSeparator) internal pure returns(bytes32 result) { bytes32 typehash = _LIMIT_ORDER_RFQ_TYPEHASH; bytes32 orderHash; // this assembly is memory unsafe :( assembly { // solhint-disable-line no-inline-assembly let ptr := sub(order, 0x20) // keccak256(abi.encode(_LIMIT_ORDER_RFQ_TYPEHASH, order)); let tmp := mload(ptr) mstore(ptr, typehash) orderHash := keccak256(ptr, 0x100) mstore(ptr, tmp) } return ECDSA.toTypedDataHash(domainSeparator, orderHash); } } // File @openzeppelin/contracts/utils/[email protected] // OpenZeppelin Contracts (last updated v4.7.0) (utils/Strings.sol) pragma solidity ^0.8.0; /** * @dev String operations. */ library Strings { bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { // Inspired by OraclizeAPI's implementation - MIT licence // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol if (value == 0) { return "0"; } uint256 temp = value; uint256 digits; while (temp != 0) { digits++; temp /= 10; } bytes memory buffer = new bytes(digits); while (value != 0) { digits -= 1; buffer[digits] = bytes1(uint8(48 + uint256(value % 10))); value /= 10; } return string(buffer); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { if (value == 0) { return "0x00"; } uint256 temp = value; uint256 length = 0; while (temp != 0) { length++; temp >>= 8; } return toHexString(value, length); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _HEX_SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } } // File @openzeppelin/contracts/utils/cryptography/[email protected] // OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol) pragma solidity ^0.8.0; /** * @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data. * * The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible, * thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding * they need in their contracts using a combination of `abi.encode` and `keccak256`. * * This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding * scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA * ({_hashTypedDataV4}). * * The implementation of the domain separator was designed to be as efficient as possible while still properly updating * the chain id to protect against replay attacks on an eventual fork of the chain. * * NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method * https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask]. * * _Available since v3.4._ */ abstract contract EIP712 { /* solhint-disable var-name-mixedcase */ // Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to // invalidate the cached domain separator if the chain id changes. bytes32 private immutable _CACHED_DOMAIN_SEPARATOR; uint256 private immutable _CACHED_CHAIN_ID; address private immutable _CACHED_THIS; bytes32 private immutable _HASHED_NAME; bytes32 private immutable _HASHED_VERSION; bytes32 private immutable _TYPE_HASH; /* solhint-enable var-name-mixedcase */ /** * @dev Initializes the domain separator and parameter caches. * * The meaning of `name` and `version` is specified in * https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]: * * - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol. * - `version`: the current major version of the signing domain. * * NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart * contract upgrade]. */ constructor(string memory name, string memory version) { bytes32 hashedName = keccak256(bytes(name)); bytes32 hashedVersion = keccak256(bytes(version)); bytes32 typeHash = keccak256( "EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)" ); _HASHED_NAME = hashedName; _HASHED_VERSION = hashedVersion; _CACHED_CHAIN_ID = block.chainid; _CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion); _CACHED_THIS = address(this); _TYPE_HASH = typeHash; } /** * @dev Returns the domain separator for the current chain. */ function _domainSeparatorV4() internal view returns (bytes32) { if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) { return _CACHED_DOMAIN_SEPARATOR; } else { return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION); } } function _buildDomainSeparator( bytes32 typeHash, bytes32 nameHash, bytes32 versionHash ) private view returns (bytes32) { return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this))); } /** * @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this * function returns the hash of the fully encoded EIP712 message for this domain. * * This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example: * * ```solidity * bytes32 digest = _hashTypedDataV4(keccak256(abi.encode( * keccak256("Mail(address to,string contents)"), * mailTo, * keccak256(bytes(mailContents)) * ))); * address signer = ECDSA.recover(digest, signature); * ``` */ function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) { return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash); } } // File @1inch/limit-order-protocol/contracts/libraries/[email protected] pragma solidity 0.8.17; library Errors { error InvalidMsgValue(); error ETHTransferFailed(); } // File @1inch/limit-order-protocol/contracts/helpers/[email protected] pragma solidity 0.8.17; /// @title A helper contract for calculations related to order amounts library AmountCalculator { /// @notice Calculates maker amount /// @return Result Floored maker amount function getMakingAmount(uint256 orderMakerAmount, uint256 orderTakerAmount, uint256 swapTakerAmount) internal pure returns(uint256) { return swapTakerAmount * orderMakerAmount / orderTakerAmount; } /// @notice Calculates taker amount /// @return Result Ceiled taker amount function getTakingAmount(uint256 orderMakerAmount, uint256 orderTakerAmount, uint256 swapMakerAmount) internal pure returns(uint256) { return (swapMakerAmount * orderTakerAmount + orderMakerAmount - 1) / orderMakerAmount; } } // File @1inch/limit-order-protocol/contracts/[email protected] pragma solidity 0.8.17; /// @title RFQ Limit Order mixin abstract contract OrderRFQMixin is EIP712, OnlyWethReceiver { using SafeERC20 for IERC20; using OrderRFQLib for OrderRFQLib.OrderRFQ; error RFQZeroTargetIsForbidden(); error RFQPrivateOrder(); error RFQBadSignature(); error OrderExpired(); error MakingAmountExceeded(); error TakingAmountExceeded(); error RFQSwapWithZeroAmount(); error InvalidatedOrder(); /** * @notice Emitted when RFQ gets filled * @param orderHash Hash of the order * @param makingAmount Amount of the maker asset that was transferred from maker to taker */ event OrderFilledRFQ( bytes32 orderHash, uint256 makingAmount ); uint256 private constant _RAW_CALL_GAS_LIMIT = 5000; uint256 private constant _MAKER_AMOUNT_FLAG = 1 << 255; uint256 private constant _SIGNER_SMART_CONTRACT_HINT = 1 << 254; uint256 private constant _IS_VALID_SIGNATURE_65_BYTES = 1 << 253; uint256 private constant _UNWRAP_WETH_FLAG = 1 << 252; uint256 private constant _AMOUNT_MASK = ~( _MAKER_AMOUNT_FLAG | _SIGNER_SMART_CONTRACT_HINT | _IS_VALID_SIGNATURE_65_BYTES | _UNWRAP_WETH_FLAG ); IWETH private immutable _WETH; // solhint-disable-line var-name-mixedcase mapping(address => mapping(uint256 => uint256)) private _invalidator; constructor(IWETH weth) OnlyWethReceiver(address(weth)) { _WETH = weth; } /** * @notice Returns bitmask for double-spend invalidators based on lowest byte of order.info and filled quotes * @param maker Maker address * @param slot Slot number to return bitmask for * @return result Each bit represents whether corresponding was already invalidated */ function invalidatorForOrderRFQ(address maker, uint256 slot) external view returns(uint256 /* result */) { return _invalidator[maker][slot]; } /** * @notice Cancels order's quote * @param orderInfo Order info (only order id in lowest 64 bits is used) */ function cancelOrderRFQ(uint256 orderInfo) external { _invalidateOrder(msg.sender, orderInfo, 0); } /// @notice Cancels multiple order's quotes function cancelOrderRFQ(uint256 orderInfo, uint256 additionalMask) external { _invalidateOrder(msg.sender, orderInfo, additionalMask); } /** * @notice Fills order's quote, fully or partially (whichever is possible) * @param order Order quote to fill * @param signature Signature to confirm quote ownership * @param flagsAndAmount Fill configuration flags with amount packed in one slot * @return filledMakingAmount Actual amount transferred from maker to taker * @return filledTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrderRFQ( OrderRFQLib.OrderRFQ memory order, bytes calldata signature, uint256 flagsAndAmount ) external payable returns(uint256 /* filledMakingAmount */, uint256 /* filledTakingAmount */, bytes32 /* orderHash */) { return fillOrderRFQTo(order, signature, flagsAndAmount, msg.sender); } /** * @notice Fills order's quote, fully or partially, with compact signature * @param order Order quote to fill * @param r R component of signature * @param vs VS component of signature * @param flagsAndAmount Fill configuration flags with amount packed in one slot * - Bits 0-252 contain the amount to fill * - Bit 253 is used to indicate whether signature is 64-bit (0) or 65-bit (1) * - Bit 254 is used to indicate whether smart contract (1) signed the order or not (0) * - Bit 255 is used to indicate whether maker (1) or taker amount (0) is given in the amount parameter * @return filledMakingAmount Actual amount transferred from maker to taker * @return filledTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrderRFQCompact( OrderRFQLib.OrderRFQ memory order, bytes32 r, bytes32 vs, uint256 flagsAndAmount ) external payable returns(uint256 filledMakingAmount, uint256 filledTakingAmount, bytes32 orderHash) { orderHash = order.hash(_domainSeparatorV4()); if (flagsAndAmount & _SIGNER_SMART_CONTRACT_HINT != 0) { if (flagsAndAmount & _IS_VALID_SIGNATURE_65_BYTES != 0) { if (!ECDSA.isValidSignature65(order.maker, orderHash, r, vs)) revert RFQBadSignature(); } else { if (!ECDSA.isValidSignature(order.maker, orderHash, r, vs)) revert RFQBadSignature(); } } else { if(!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, r, vs)) revert RFQBadSignature(); } (filledMakingAmount, filledTakingAmount) = _fillOrderRFQTo(order, flagsAndAmount, msg.sender); emit OrderFilledRFQ(orderHash, filledMakingAmount); } /** * @notice Same as `fillOrderRFQTo` but calls permit first. * It allows to approve token spending and make a swap in one transaction. * Also allows to specify funds destination instead of `msg.sender` * @param order Order quote to fill * @param signature Signature to confirm quote ownership * @param flagsAndAmount Fill configuration flags with amount packed in one slot * @param target Address that will receive swap funds * @param permit Should consist of abiencoded token address and encoded `IERC20Permit.permit` call. * @return filledMakingAmount Actual amount transferred from maker to taker * @return filledTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order * @dev See tests for examples */ function fillOrderRFQToWithPermit( OrderRFQLib.OrderRFQ memory order, bytes calldata signature, uint256 flagsAndAmount, address target, bytes calldata permit ) external returns(uint256 /* filledMakingAmount */, uint256 /* filledTakingAmount */, bytes32 /* orderHash */) { IERC20(order.takerAsset).safePermit(permit); return fillOrderRFQTo(order, signature, flagsAndAmount, target); } /** * @notice Same as `fillOrderRFQ` but allows to specify funds destination instead of `msg.sender` * @param order Order quote to fill * @param signature Signature to confirm quote ownership * @param flagsAndAmount Fill configuration flags with amount packed in one slot * @param target Address that will receive swap funds * @return filledMakingAmount Actual amount transferred from maker to taker * @return filledTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrderRFQTo( OrderRFQLib.OrderRFQ memory order, bytes calldata signature, uint256 flagsAndAmount, address target ) public payable returns(uint256 filledMakingAmount, uint256 filledTakingAmount, bytes32 orderHash) { orderHash = order.hash(_domainSeparatorV4()); if (flagsAndAmount & _SIGNER_SMART_CONTRACT_HINT != 0) { if (flagsAndAmount & _IS_VALID_SIGNATURE_65_BYTES != 0 && signature.length != 65) revert RFQBadSignature(); if (!ECDSA.isValidSignature(order.maker, orderHash, signature)) revert RFQBadSignature(); } else { if(!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, signature)) revert RFQBadSignature(); } (filledMakingAmount, filledTakingAmount) = _fillOrderRFQTo(order, flagsAndAmount, target); emit OrderFilledRFQ(orderHash, filledMakingAmount); } function _fillOrderRFQTo( OrderRFQLib.OrderRFQ memory order, uint256 flagsAndAmount, address target ) private returns(uint256 makingAmount, uint256 takingAmount) { if (target == address(0)) revert RFQZeroTargetIsForbidden(); address maker = order.maker; // Validate order if (order.allowedSender != address(0) && order.allowedSender != msg.sender) revert RFQPrivateOrder(); { // Stack too deep uint256 info = order.info; // Check time expiration uint256 expiration = uint128(info) >> 64; if (expiration != 0 && block.timestamp > expiration) revert OrderExpired(); // solhint-disable-line not-rely-on-time _invalidateOrder(maker, info, 0); } { // Stack too deep uint256 orderMakingAmount = order.makingAmount; uint256 orderTakingAmount = order.takingAmount; uint256 amount = flagsAndAmount & _AMOUNT_MASK; // Compute partial fill if needed if (amount == 0) { // zero amount means whole order makingAmount = orderMakingAmount; takingAmount = orderTakingAmount; } else if (flagsAndAmount & _MAKER_AMOUNT_FLAG != 0) { if (amount > orderMakingAmount) revert MakingAmountExceeded(); makingAmount = amount; takingAmount = AmountCalculator.getTakingAmount(orderMakingAmount, orderTakingAmount, makingAmount); } else { if (amount > orderTakingAmount) revert TakingAmountExceeded(); takingAmount = amount; makingAmount = AmountCalculator.getMakingAmount(orderMakingAmount, orderTakingAmount, takingAmount); } } if (makingAmount == 0 || takingAmount == 0) revert RFQSwapWithZeroAmount(); // Maker => Taker if (order.makerAsset == address(_WETH) && flagsAndAmount & _UNWRAP_WETH_FLAG != 0) { _WETH.transferFrom(maker, address(this), makingAmount); _WETH.withdraw(makingAmount); // solhint-disable-next-line avoid-low-level-calls (bool success, ) = target.call{value: makingAmount, gas: _RAW_CALL_GAS_LIMIT}(""); if (!success) revert Errors.ETHTransferFailed(); } else { IERC20(order.makerAsset).safeTransferFrom(maker, target, makingAmount); } // Taker => Maker if (order.takerAsset == address(_WETH) && msg.value > 0) { if (msg.value != takingAmount) revert Errors.InvalidMsgValue(); _WETH.deposit{ value: takingAmount }(); _WETH.transfer(maker, takingAmount); } else { if (msg.value != 0) revert Errors.InvalidMsgValue(); IERC20(order.takerAsset).safeTransferFrom(msg.sender, maker, takingAmount); } } function _invalidateOrder(address maker, uint256 orderInfo, uint256 additionalMask) private { uint256 invalidatorSlot = uint64(orderInfo) >> 8; uint256 invalidatorBits = (1 << uint8(orderInfo)) | additionalMask; mapping(uint256 => uint256) storage invalidatorStorage = _invalidator[maker]; uint256 invalidator = invalidatorStorage[invalidatorSlot]; if (invalidator & invalidatorBits == invalidatorBits) revert InvalidatedOrder(); invalidatorStorage[invalidatorSlot] = invalidator | invalidatorBits; } } // File @1inch/limit-order-protocol/contracts/[email protected] pragma solidity 0.8.17; library OrderLib { struct Order { uint256 salt; address makerAsset; address takerAsset; address maker; address receiver; address allowedSender; // equals to Zero address on public orders uint256 makingAmount; uint256 takingAmount; uint256 offsets; // bytes makerAssetData; // bytes takerAssetData; // bytes getMakingAmount; // this.staticcall(abi.encodePacked(bytes, swapTakerAmount)) => (swapMakerAmount) // bytes getTakingAmount; // this.staticcall(abi.encodePacked(bytes, swapMakerAmount)) => (swapTakerAmount) // bytes predicate; // this.staticcall(bytes) => (bool) // bytes permit; // On first fill: permit.1.call(abi.encodePacked(permit.selector, permit.2)) // bytes preInteraction; // bytes postInteraction; bytes interactions; // concat(makerAssetData, takerAssetData, getMakingAmount, getTakingAmount, predicate, permit, preIntercation, postInteraction) } bytes32 constant internal _LIMIT_ORDER_TYPEHASH = keccak256( "Order(" "uint256 salt," "address makerAsset," "address takerAsset," "address maker," "address receiver," "address allowedSender," "uint256 makingAmount," "uint256 takingAmount," "uint256 offsets," "bytes interactions" ")" ); enum DynamicField { MakerAssetData, TakerAssetData, GetMakingAmount, GetTakingAmount, Predicate, Permit, PreInteraction, PostInteraction } function getterIsFrozen(bytes calldata getter) internal pure returns(bool) { return getter.length == 1 && getter[0] == "x"; } function _get(Order calldata order, DynamicField field) private pure returns(bytes calldata) { uint256 bitShift = uint256(field) << 5; // field * 32 return order.interactions[ uint32((order.offsets << 32) >> bitShift): uint32(order.offsets >> bitShift) ]; } function makerAssetData(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.MakerAssetData); } function takerAssetData(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.TakerAssetData); } function getMakingAmount(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.GetMakingAmount); } function getTakingAmount(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.GetTakingAmount); } function predicate(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.Predicate); } function permit(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.Permit); } function preInteraction(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.PreInteraction); } function postInteraction(Order calldata order) internal pure returns(bytes calldata) { return _get(order, DynamicField.PostInteraction); } function hash(Order calldata order, bytes32 domainSeparator) internal pure returns(bytes32 result) { bytes calldata interactions = order.interactions; bytes32 typehash = _LIMIT_ORDER_TYPEHASH; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let ptr := mload(0x40) // keccak256(abi.encode(_LIMIT_ORDER_TYPEHASH, orderWithoutInteractions, keccak256(order.interactions))); calldatacopy(ptr, interactions.offset, interactions.length) mstore(add(ptr, 0x140), keccak256(ptr, interactions.length)) calldatacopy(add(ptr, 0x20), order, 0x120) mstore(ptr, typehash) result := keccak256(ptr, 0x160) } result = ECDSA.toTypedDataHash(domainSeparator, result); } } // File @1inch/limit-order-protocol/contracts/libraries/[email protected] pragma solidity 0.8.17; /// @title Library with gas efficient alternatives to `abi.decode` library ArgumentsDecoder { error IncorrectDataLength(); function decodeUint256(bytes calldata data, uint256 offset) internal pure returns(uint256 value) { unchecked { if (data.length < offset + 32) revert IncorrectDataLength(); } // no memory ops inside so this insertion is automatically memory safe assembly { // solhint-disable-line no-inline-assembly value := calldataload(add(data.offset, offset)) } } function decodeSelector(bytes calldata data) internal pure returns(bytes4 value) { if (data.length < 4) revert IncorrectDataLength(); // no memory ops inside so this insertion is automatically memory safe assembly { // solhint-disable-line no-inline-assembly value := calldataload(data.offset) } } function decodeTailCalldata(bytes calldata data, uint256 tailOffset) internal pure returns(bytes calldata args) { if (data.length < tailOffset) revert IncorrectDataLength(); // no memory ops inside so this insertion is automatically memory safe assembly { // solhint-disable-line no-inline-assembly args.offset := add(data.offset, tailOffset) args.length := sub(data.length, tailOffset) } } function decodeTargetAndCalldata(bytes calldata data) internal pure returns(address target, bytes calldata args) { if (data.length < 20) revert IncorrectDataLength(); // no memory ops inside so this insertion is automatically memory safe assembly { // solhint-disable-line no-inline-assembly target := shr(96, calldataload(data.offset)) args.offset := add(data.offset, 20) args.length := sub(data.length, 20) } } } // File @1inch/limit-order-protocol/contracts/helpers/[email protected] pragma solidity 0.8.17; /// @title A helper contract for managing nonce of tx sender contract NonceManager { error AdvanceNonceFailed(); event NonceIncreased(address indexed maker, uint256 newNonce); mapping(address => uint256) public nonce; /// @notice Advances nonce by one function increaseNonce() external { advanceNonce(1); } /// @notice Advances nonce by specified amount function advanceNonce(uint8 amount) public { if (amount == 0) revert AdvanceNonceFailed(); uint256 newNonce = nonce[msg.sender] + amount; nonce[msg.sender] = newNonce; emit NonceIncreased(msg.sender, newNonce); } /// @notice Checks if `makerAddress` has specified `makerNonce` /// @return Result True if `makerAddress` has specified nonce. Otherwise, false function nonceEquals(address makerAddress, uint256 makerNonce) public view returns(bool) { return nonce[makerAddress] == makerNonce; } } // File @1inch/limit-order-protocol/contracts/helpers/[email protected] pragma solidity 0.8.17; /// @title A helper contract for executing boolean functions on arbitrary target call results contract PredicateHelper is NonceManager { using ArgumentsDecoder for bytes; error ArbitraryStaticCallFailed(); /// @notice Calls every target with corresponding data /// @return Result True if call to any target returned True. Otherwise, false function or(uint256 offsets, bytes calldata data) public view returns(bool) { uint256 current; uint256 previous; for (uint256 i = 0; (current = uint32(offsets >> i)) != 0; i += 32) { (bool success, uint256 res) = _selfStaticCall(data[previous:current]); if (success && res == 1) { return true; } previous = current; } return false; } /// @notice Calls every target with corresponding data /// @return Result True if calls to all targets returned True. Otherwise, false function and(uint256 offsets, bytes calldata data) public view returns(bool) { uint256 current; uint256 previous; for (uint256 i = 0; (current = uint32(offsets >> i)) != 0; i += 32) { (bool success, uint256 res) = _selfStaticCall(data[previous:current]); if (!success || res != 1) { return false; } previous = current; } return true; } /// @notice Calls target with specified data and tests if it's equal to the value /// @param value Value to test /// @return Result True if call to target returns the same value as `value`. Otherwise, false function eq(uint256 value, bytes calldata data) public view returns(bool) { (bool success, uint256 res) = _selfStaticCall(data); return success && res == value; } /// @notice Calls target with specified data and tests if it's lower than value /// @param value Value to test /// @return Result True if call to target returns value which is lower than `value`. Otherwise, false function lt(uint256 value, bytes calldata data) public view returns(bool) { (bool success, uint256 res) = _selfStaticCall(data); return success && res < value; } /// @notice Calls target with specified data and tests if it's bigger than value /// @param value Value to test /// @return Result True if call to target returns value which is bigger than `value`. Otherwise, false function gt(uint256 value, bytes calldata data) public view returns(bool) { (bool success, uint256 res) = _selfStaticCall(data); return success && res > value; } /// @notice Checks passed time against block timestamp /// @return Result True if current block timestamp is lower than `time`. Otherwise, false function timestampBelow(uint256 time) public view returns(bool) { return block.timestamp < time; // solhint-disable-line not-rely-on-time } /// @notice Performs an arbitrary call to target with data /// @return Result Bytes transmuted to uint256 function arbitraryStaticCall(address target, bytes calldata data) public view returns(uint256) { (bool success, uint256 res) = _staticcallForUint(target, data); if (!success) revert ArbitraryStaticCallFailed(); return res; } function timestampBelowAndNonceEquals(uint256 timeNonceAccount) public view returns(bool) { uint256 _time = uint48(timeNonceAccount >> 208); uint256 _nonce = uint48(timeNonceAccount >> 160); address _account = address(uint160(timeNonceAccount)); return timestampBelow(_time) && nonceEquals(_account, _nonce); } function _selfStaticCall(bytes calldata data) internal view returns(bool, uint256) { uint256 selector = uint32(data.decodeSelector()); uint256 arg = data.decodeUint256(4); // special case for the most often used predicate if (selector == uint32(this.timestampBelowAndNonceEquals.selector)) { // 0x2cc2878d return (true, timestampBelowAndNonceEquals(arg) ? 1 : 0); } if (selector < uint32(this.arbitraryStaticCall.selector)) { // 0xbf15fcd8 if (selector < uint32(this.eq.selector)) { // 0x6fe7b0ba if (selector == uint32(this.gt.selector)) { // 0x4f38e2b8 return (true, gt(arg, data.decodeTailCalldata(100)) ? 1 : 0); } else if (selector == uint32(this.timestampBelow.selector)) { // 0x63592c2b return (true, timestampBelow(arg) ? 1 : 0); } } else { if (selector == uint32(this.eq.selector)) { // 0x6fe7b0ba return (true, eq(arg, data.decodeTailCalldata(100)) ? 1 : 0); } else if (selector == uint32(this.or.selector)) { // 0x74261145 return (true, or(arg, data.decodeTailCalldata(100)) ? 1 : 0); } } } else { if (selector < uint32(this.lt.selector)) { // 0xca4ece22 if (selector == uint32(this.arbitraryStaticCall.selector)) { // 0xbf15fcd8 return (true, arbitraryStaticCall(address(uint160(arg)), data.decodeTailCalldata(100))); } else if (selector == uint32(this.and.selector)) { // 0xbfa75143 return (true, and(arg, data.decodeTailCalldata(100)) ? 1 : 0); } } else { if (selector == uint32(this.lt.selector)) { // 0xca4ece22 return (true, lt(arg, data.decodeTailCalldata(100)) ? 1 : 0); } else if (selector == uint32(this.nonceEquals.selector)) { // 0xcf6fc6e3 return (true, nonceEquals(address(uint160(arg)), data.decodeUint256(0x24)) ? 1 : 0); } } } return _staticcallForUint(address(this), data); } function _staticcallForUint(address target, bytes calldata input) private view returns(bool success, uint256 res) { /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) calldatacopy(data, input.offset, input.length) success := staticcall(gas(), target, data, input.length, 0x0, 0x20) success := and(success, eq(returndatasize(), 32)) if success { res := mload(0) } } } } // File @1inch/limit-order-protocol/contracts/interfaces/[email protected] pragma solidity 0.8.17; interface IOrderMixin { /** * @notice Returns unfilled amount for order. Throws if order does not exist * @param orderHash Order's hash. Can be obtained by the `hashOrder` function * @return amount Unfilled amount */ function remaining(bytes32 orderHash) external view returns(uint256 amount); /** * @notice Returns unfilled amount for order * @param orderHash Order's hash. Can be obtained by the `hashOrder` function * @return rawAmount Unfilled amount of order plus one if order exists. Otherwise 0 */ function remainingRaw(bytes32 orderHash) external view returns(uint256 rawAmount); /** * @notice Same as `remainingRaw` but for multiple orders * @param orderHashes Array of hashes * @return rawAmounts Array of amounts for each order plus one if order exists or 0 otherwise */ function remainingsRaw(bytes32[] memory orderHashes) external view returns(uint256[] memory rawAmounts); /** * @notice Checks order predicate * @param order Order to check predicate for * @return result Predicate evaluation result. True if predicate allows to fill the order, false otherwise */ function checkPredicate(OrderLib.Order calldata order) external view returns(bool result); /** * @notice Returns order hash according to EIP712 standard * @param order Order to get hash for * @return orderHash Hash of the order */ function hashOrder(OrderLib.Order calldata order) external view returns(bytes32); /** * @notice Delegates execution to custom implementation. Could be used to validate if `transferFrom` works properly * @dev The function always reverts and returns the simulation results in revert data. * @param target Addresses that will be delegated * @param data Data that will be passed to delegatee */ function simulate(address target, bytes calldata data) external; /** * @notice Cancels order. * @dev Order is cancelled by setting remaining amount to _ORDER_FILLED value * @param order Order quote to cancel * @return orderRemaining Unfilled amount of order before cancellation * @return orderHash Hash of the filled order */ function cancelOrder(OrderLib.Order calldata order) external returns(uint256 orderRemaining, bytes32 orderHash); /** * @notice Fills an order. If one doesn't exist (first fill) it will be created using order.makerAssetData * @param order Order quote to fill * @param signature Signature to confirm quote ownership * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets. * @param makingAmount Making amount * @param takingAmount Taking amount * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit. * @return actualMakingAmount Actual amount transferred from maker to taker * @return actualTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrder( OrderLib.Order calldata order, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount ) external payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash); /** * @notice Same as `fillOrderTo` but calls permit first, * allowing to approve token spending and make a swap in one transaction. * Also allows to specify funds destination instead of `msg.sender` * @dev See tests for examples * @param order Order quote to fill * @param signature Signature to confirm quote ownership * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets. * @param makingAmount Making amount * @param takingAmount Taking amount * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit. * @param target Address that will receive swap funds * @param permit Should consist of abiencoded token address and encoded `IERC20Permit.permit` call. * @return actualMakingAmount Actual amount transferred from maker to taker * @return actualTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrderToWithPermit( OrderLib.Order calldata order, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount, address target, bytes calldata permit ) external returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash); /** * @notice Same as `fillOrder` but allows to specify funds destination instead of `msg.sender` * @param order_ Order quote to fill * @param signature Signature to confirm quote ownership * @param interaction A call data for InteractiveNotificationReceiver. Taker may execute interaction after getting maker assets and before sending taker assets. * @param makingAmount Making amount * @param takingAmount Taking amount * @param skipPermitAndThresholdAmount Specifies maximum allowed takingAmount when takingAmount is zero, otherwise specifies minimum allowed makingAmount. Top-most bit specifies whether taker wants to skip maker's permit. * @param target Address that will receive swap funds * @return actualMakingAmount Actual amount transferred from maker to taker * @return actualTakingAmount Actual amount transferred from taker to maker * @return orderHash Hash of the filled order */ function fillOrderTo( OrderLib.Order calldata order_, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount, address target ) external payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash); } // File @1inch/limit-order-protocol/contracts/interfaces/[email protected] pragma solidity 0.8.17; /// @title Interface for interactor which acts between `maker => taker` and `taker => maker` transfers. interface PreInteractionNotificationReceiver { function fillOrderPreInteraction( bytes32 orderHash, address maker, address taker, uint256 makingAmount, uint256 takingAmount, uint256 remainingAmount, bytes memory interactiveData ) external; } interface PostInteractionNotificationReceiver { /// @notice Callback method that gets called after taker transferred funds to maker but before /// the opposite transfer happened function fillOrderPostInteraction( bytes32 orderHash, address maker, address taker, uint256 makingAmount, uint256 takingAmount, uint256 remainingAmount, bytes memory interactiveData ) external; } interface InteractionNotificationReceiver { function fillOrderInteraction( address taker, uint256 makingAmount, uint256 takingAmount, bytes memory interactiveData ) external returns(uint256 offeredTakingAmount); } // File @1inch/limit-order-protocol/contracts/[email protected] pragma solidity 0.8.17; /// @title Regular Limit Order mixin abstract contract OrderMixin is IOrderMixin, EIP712, PredicateHelper { using SafeERC20 for IERC20; using ArgumentsDecoder for bytes; using OrderLib for OrderLib.Order; error UnknownOrder(); error AccessDenied(); error AlreadyFilled(); error PermitLengthTooLow(); error ZeroTargetIsForbidden(); error RemainingAmountIsZero(); error PrivateOrder(); error BadSignature(); error ReentrancyDetected(); error PredicateIsNotTrue(); error OnlyOneAmountShouldBeZero(); error TakingAmountTooHigh(); error MakingAmountTooLow(); error SwapWithZeroAmount(); error TransferFromMakerToTakerFailed(); error TransferFromTakerToMakerFailed(); error WrongAmount(); error WrongGetter(); error GetAmountCallFailed(); error TakingAmountIncreased(); error SimulationResults(bool success, bytes res); /// @notice Emitted every time order gets filled, including partial fills event OrderFilled( address indexed maker, bytes32 orderHash, uint256 remaining ); /// @notice Emitted when order gets cancelled event OrderCanceled( address indexed maker, bytes32 orderHash, uint256 remainingRaw ); uint256 constant private _ORDER_DOES_NOT_EXIST = 0; uint256 constant private _ORDER_FILLED = 1; uint256 constant private _SKIP_PERMIT_FLAG = 1 << 255; uint256 constant private _THRESHOLD_MASK = ~_SKIP_PERMIT_FLAG; IWETH private immutable _WETH; // solhint-disable-line var-name-mixedcase /// @notice Stores unfilled amounts for each order plus one. /// Therefore 0 means order doesn't exist and 1 means order was filled mapping(bytes32 => uint256) private _remaining; constructor(IWETH weth) { _WETH = weth; } /** * @notice See {IOrderMixin-remaining}. */ function remaining(bytes32 orderHash) external view returns(uint256 /* amount */) { uint256 amount = _remaining[orderHash]; if (amount == _ORDER_DOES_NOT_EXIST) revert UnknownOrder(); unchecked { return amount - 1; } } /** * @notice See {IOrderMixin-remainingRaw}. */ function remainingRaw(bytes32 orderHash) external view returns(uint256 /* rawAmount */) { return _remaining[orderHash]; } /** * @notice See {IOrderMixin-remainingsRaw}. */ function remainingsRaw(bytes32[] memory orderHashes) external view returns(uint256[] memory /* rawAmounts */) { uint256[] memory results = new uint256[](orderHashes.length); for (uint256 i = 0; i < orderHashes.length; i++) { results[i] = _remaining[orderHashes[i]]; } return results; } /** * @notice See {IOrderMixin-simulate}. */ function simulate(address target, bytes calldata data) external { // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory result) = target.delegatecall(data); revert SimulationResults(success, result); } /** * @notice See {IOrderMixin-cancelOrder}. */ function cancelOrder(OrderLib.Order calldata order) external returns(uint256 orderRemaining, bytes32 orderHash) { if (order.maker != msg.sender) revert AccessDenied(); orderHash = hashOrder(order); orderRemaining = _remaining[orderHash]; if (orderRemaining == _ORDER_FILLED) revert AlreadyFilled(); emit OrderCanceled(msg.sender, orderHash, orderRemaining); _remaining[orderHash] = _ORDER_FILLED; } /** * @notice See {IOrderMixin-fillOrder}. */ function fillOrder( OrderLib.Order calldata order, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount ) external payable returns(uint256 /* actualMakingAmount */, uint256 /* actualTakingAmount */, bytes32 /* orderHash */) { return fillOrderTo(order, signature, interaction, makingAmount, takingAmount, skipPermitAndThresholdAmount, msg.sender); } /** * @notice See {IOrderMixin-fillOrderToWithPermit}. */ function fillOrderToWithPermit( OrderLib.Order calldata order, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount, address target, bytes calldata permit ) external returns(uint256 /* actualMakingAmount */, uint256 /* actualTakingAmount */, bytes32 /* orderHash */) { if (permit.length < 20) revert PermitLengthTooLow(); { // Stack too deep (address token, bytes calldata permitData) = permit.decodeTargetAndCalldata(); IERC20(token).safePermit(permitData); } return fillOrderTo(order, signature, interaction, makingAmount, takingAmount, skipPermitAndThresholdAmount, target); } /** * @notice See {IOrderMixin-fillOrderTo}. */ function fillOrderTo( OrderLib.Order calldata order_, bytes calldata signature, bytes calldata interaction, uint256 makingAmount, uint256 takingAmount, uint256 skipPermitAndThresholdAmount, address target ) public payable returns(uint256 actualMakingAmount, uint256 actualTakingAmount, bytes32 orderHash) { if (target == address(0)) revert ZeroTargetIsForbidden(); orderHash = hashOrder(order_); OrderLib.Order calldata order = order_; // Helps with "Stack too deep" actualMakingAmount = makingAmount; actualTakingAmount = takingAmount; uint256 remainingMakingAmount = _remaining[orderHash]; if (remainingMakingAmount == _ORDER_FILLED) revert RemainingAmountIsZero(); if (order.allowedSender != address(0) && order.allowedSender != msg.sender) revert PrivateOrder(); if (remainingMakingAmount == _ORDER_DOES_NOT_EXIST) { // First fill: validate order and permit maker asset if (!ECDSA.recoverOrIsValidSignature(order.maker, orderHash, signature)) revert BadSignature(); remainingMakingAmount = order.makingAmount; bytes calldata permit = order.permit(); if (skipPermitAndThresholdAmount & _SKIP_PERMIT_FLAG == 0 && permit.length >= 20) { // proceed only if taker is willing to execute permit and its length is enough to store address (address token, bytes calldata permitCalldata) = permit.decodeTargetAndCalldata(); IERC20(token).safePermit(permitCalldata); if (_remaining[orderHash] != _ORDER_DOES_NOT_EXIST) revert ReentrancyDetected(); } } else { unchecked { remainingMakingAmount -= 1; } } // Check if order is valid if (order.predicate().length > 0) { if (!checkPredicate(order)) revert PredicateIsNotTrue(); } // Compute maker and taker assets amount if ((actualTakingAmount == 0) == (actualMakingAmount == 0)) { revert OnlyOneAmountShouldBeZero(); } else if (actualTakingAmount == 0) { if (actualMakingAmount > remainingMakingAmount) { actualMakingAmount = remainingMakingAmount; } actualTakingAmount = _getTakingAmount(order.getTakingAmount(), order.makingAmount, actualMakingAmount, order.takingAmount, remainingMakingAmount, orderHash); uint256 thresholdAmount = skipPermitAndThresholdAmount & _THRESHOLD_MASK; // check that actual rate is not worse than what was expected // actualTakingAmount / actualMakingAmount <= thresholdAmount / makingAmount if (actualTakingAmount * makingAmount > thresholdAmount * actualMakingAmount) revert TakingAmountTooHigh(); } else { actualMakingAmount = _getMakingAmount(order.getMakingAmount(), order.takingAmount, actualTakingAmount, order.makingAmount, remainingMakingAmount, orderHash); if (actualMakingAmount > remainingMakingAmount) { actualMakingAmount = remainingMakingAmount; actualTakingAmount = _getTakingAmount(order.getTakingAmount(), order.makingAmount, actualMakingAmount, order.takingAmount, remainingMakingAmount, orderHash); if (actualTakingAmount > takingAmount) revert TakingAmountIncreased(); } uint256 thresholdAmount = skipPermitAndThresholdAmount & _THRESHOLD_MASK; // check that actual rate is not worse than what was expected // actualMakingAmount / actualTakingAmount >= thresholdAmount / takingAmount if (actualMakingAmount * takingAmount < thresholdAmount * actualTakingAmount) revert MakingAmountTooLow(); } if (actualMakingAmount == 0 || actualTakingAmount == 0) revert SwapWithZeroAmount(); // Update remaining amount in storage unchecked { remainingMakingAmount = remainingMakingAmount - actualMakingAmount; _remaining[orderHash] = remainingMakingAmount + 1; } emit OrderFilled(order_.maker, orderHash, remainingMakingAmount); // Maker can handle funds interactively if (order.preInteraction().length >= 20) { // proceed only if interaction length is enough to store address (address interactionTarget, bytes calldata interactionData) = order.preInteraction().decodeTargetAndCalldata(); PreInteractionNotificationReceiver(interactionTarget).fillOrderPreInteraction( orderHash, order.maker, msg.sender, actualMakingAmount, actualTakingAmount, remainingMakingAmount, interactionData ); } // Maker => Taker if (!_callTransferFrom( order.makerAsset, order.maker, target, actualMakingAmount, order.makerAssetData() )) revert TransferFromMakerToTakerFailed(); if (interaction.length >= 20) { // proceed only if interaction length is enough to store address (address interactionTarget, bytes calldata interactionData) = interaction.decodeTargetAndCalldata(); uint256 offeredTakingAmount = InteractionNotificationReceiver(interactionTarget).fillOrderInteraction( msg.sender, actualMakingAmount, actualTakingAmount, interactionData ); if (offeredTakingAmount > actualTakingAmount && !OrderLib.getterIsFrozen(order.getMakingAmount()) && !OrderLib.getterIsFrozen(order.getTakingAmount())) { actualTakingAmount = offeredTakingAmount; } } // Taker => Maker if (order.takerAsset == address(_WETH) && msg.value > 0) { if (msg.value < actualTakingAmount) revert Errors.InvalidMsgValue(); if (msg.value > actualTakingAmount) { unchecked { (bool success, ) = msg.sender.call{value: msg.value - actualTakingAmount}(""); // solhint-disable-line avoid-low-level-calls if (!success) revert Errors.ETHTransferFailed(); } } _WETH.deposit{ value: actualTakingAmount }(); _WETH.transfer(order.receiver == address(0) ? order.maker : order.receiver, actualTakingAmount); } else { if (msg.value != 0) revert Errors.InvalidMsgValue(); if (!_callTransferFrom( order.takerAsset, msg.sender, order.receiver == address(0) ? order.maker : order.receiver, actualTakingAmount, order.takerAssetData() )) revert TransferFromTakerToMakerFailed(); } // Maker can handle funds interactively if (order.postInteraction().length >= 20) { // proceed only if interaction length is enough to store address (address interactionTarget, bytes calldata interactionData) = order.postInteraction().decodeTargetAndCalldata(); PostInteractionNotificationReceiver(interactionTarget).fillOrderPostInteraction( orderHash, order.maker, msg.sender, actualMakingAmount, actualTakingAmount, remainingMakingAmount, interactionData ); } } /** * @notice See {IOrderMixin-checkPredicate}. */ function checkPredicate(OrderLib.Order calldata order) public view returns(bool) { (bool success, uint256 res) = _selfStaticCall(order.predicate()); return success && res == 1; } /** * @notice See {IOrderMixin-hashOrder}. */ function hashOrder(OrderLib.Order calldata order) public view returns(bytes32) { return order.hash(_domainSeparatorV4()); } function _callTransferFrom(address asset, address from, address to, uint256 amount, bytes calldata input) private returns(bool success) { bytes4 selector = IERC20.transferFrom.selector; /// @solidity memory-safe-assembly assembly { // solhint-disable-line no-inline-assembly let data := mload(0x40) mstore(data, selector) mstore(add(data, 0x04), from) mstore(add(data, 0x24), to) mstore(add(data, 0x44), amount) calldatacopy(add(data, 0x64), input.offset, input.length) let status := call(gas(), asset, 0, data, add(0x64, input.length), 0x0, 0x20) success := and(status, or(iszero(returndatasize()), and(gt(returndatasize(), 31), eq(mload(0), 1)))) } } function _getMakingAmount( bytes calldata getter, uint256 orderTakingAmount, uint256 requestedTakingAmount, uint256 orderMakingAmount, uint256 remainingMakingAmount, bytes32 orderHash ) private view returns(uint256) { if (getter.length == 0) { // Linear proportion return AmountCalculator.getMakingAmount(orderMakingAmount, orderTakingAmount, requestedTakingAmount); } return _callGetter(getter, orderTakingAmount, requestedTakingAmount, orderMakingAmount, remainingMakingAmount, orderHash); } function _getTakingAmount( bytes calldata getter, uint256 orderMakingAmount, uint256 requestedMakingAmount, uint256 orderTakingAmount, uint256 remainingMakingAmount, bytes32 orderHash ) private view returns(uint256) { if (getter.length == 0) { // Linear proportion return AmountCalculator.getTakingAmount(orderMakingAmount, orderTakingAmount, requestedMakingAmount); } return _callGetter(getter, orderMakingAmount, requestedMakingAmount, orderTakingAmount, remainingMakingAmount, orderHash); } function _callGetter( bytes calldata getter, uint256 orderExpectedAmount, uint256 requestedAmount, uint256 orderResultAmount, uint256 remainingMakingAmount, bytes32 orderHash ) private view returns(uint256) { if (getter.length == 1) { if (OrderLib.getterIsFrozen(getter)) { // On "x" getter calldata only exact amount is allowed if (requestedAmount != orderExpectedAmount) revert WrongAmount(); return orderResultAmount; } else { revert WrongGetter(); } } else { (address target, bytes calldata data) = getter.decodeTargetAndCalldata(); (bool success, bytes memory result) = target.staticcall(abi.encodePacked(data, requestedAmount, remainingMakingAmount, orderHash)); if (!success || result.length != 32) revert GetAmountCallFailed(); return abi.decode(result, (uint256)); } } } // File @openzeppelin/contracts/utils/[email protected] // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } } // File @openzeppelin/contracts/access/[email protected] // OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol) pragma solidity ^0.8.0; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } } // File contracts/AggregationRouterV5.sol pragma solidity 0.8.17; /// @notice Main contract incorporates a number of routers to perform swaps and limit orders protocol to fill limit orders contract AggregationRouterV5 is EIP712("1inch Aggregation Router", "5"), Ownable, ClipperRouter, GenericRouter, UnoswapRouter, UnoswapV3Router, OrderMixin, OrderRFQMixin { using UniERC20 for IERC20; error ZeroAddress(); /** * @dev Sets the wrapped eth token and clipper exhange interface * Both values are immutable: they can only be set once during * construction. */ constructor(IWETH weth) UnoswapV3Router(weth) ClipperRouter(weth) OrderMixin(weth) OrderRFQMixin(weth) { if (address(weth) == address(0)) revert ZeroAddress(); } /** * @notice Retrieves funds accidently sent directly to the contract address * @param token ERC20 token to retrieve * @param amount amount to retrieve */ function rescueFunds(IERC20 token, uint256 amount) external onlyOwner { token.uniTransfer(payable(msg.sender), amount); } /** * @notice Destroys the contract and sends eth to sender. Use with caution. * The only case when the use of the method is justified is if there is an exploit found. * And the damage from the exploit is greater than from just an urgent contract change. */ function destroy() external onlyOwner { selfdestruct(payable(msg.sender)); } function _receive() internal override(EthReceiver, OnlyWethReceiver) { EthReceiver._receive(); } }